This summarizes a selection from 215 applications for the Experimental Radio Service received by the FCC during October, November, and December 2011. These are related to AM broadcasting, FM broadcasting, spread spectrum on HF and VHF, unmanned aerial vehicle control, electronic warfare support, small satellites, white space technology, video production, cellphones in prisons, TV interference, RFID, and radar.  The descriptions are listed in order of the lowest frequency found in the application.

• Amateur Radio operator Brian Justin filed an application withexhibit for special temporary authority to “be able to operate antique Heising modulation on 470.0 kHz on or about x-mas evening and several other days” to commemorate Reginald Fessenden’s ‘original claimed voice transmissions over 100 yrs ago.” The transmissions were to take place on 470-475 kHz from Forest, Virginia.
• Chesapeake Operating, Inc. filed an application with exhibit for special temporary authority to “provide music and announcements throughout Chesapeake’s corporate campus” and “determining propagation and coverage while simultaneously considering a waiver to operate permanently under 15.221(b)” of the FCC’s Rules. Operation is to be on 1300 kHz and 1610 kHz in Oklahoma City, Oklahoma. The applicant says it’s parent company, Chesapeake Energy, “is the Nation’s second-largest producer of natural gas, a top 15 producer of oil and natural gas liquids and the most active driller of new wells in the U.S.” “Chesapeake is considering the use of low power AM broadcasts at its corporate campus that could be used for a variety of purposes. For example, the system could be used for disseminating severe weather information (e.g., tornado watches, tornado warnings, ice storms, etc.,) street closings, traffic re-routes due to construction, as well as during outdoor events such as the farmers market that Chesapeake sponsors during the summer months and outdoor activities associated with United Way campaigns, concerts, and family events.”
• Phillip J. Williams filed an application with exhibits for special temporary authority to operate using spread spectrum on HF and VHF frequencies in the Amateur Radio Service. Current rules don’t permit spread spectrum operation below 220 MHz. In the tests, comparisons will be made with other digital modes such as JT65A, Olivia, MT63 and PSK31, including with regard to weak signal capabilities. Experiments will focus on minimum required transmitter power and developing operating procedures for the Amateur Radio community. Operation will take place in Euless, Texas in various Amateur bands between 1.8 and 148 MHz.
• The Center for Remote Sensing of Ice Sheets at the University of Kansas filed an application with exhibits for experimental license to conduct testing of a 72 MHz link used to control the “Meridian Uninhabited Aircraft System,” an aircraft that carries a variety of scientific payloads, including ice-penetrating radar, for research on the flow ice sheets in Greenland and Antarctica. Operation will be at several locations in Kansas and Utah on 72.01-72.99 MHz.
• National Public Radio filed an application with exhibits for experimental license to evaluate the feasibility of using a Cognitive Modulator. This is envisioned as an alternative to consumer FM modulators long used to allow audio from a personal electronic device to be played through a vehicle’s FM radio. These modulators have their drawbacks: they can cause interference to other FM listeners, FCC rules limit their power such that it can be difficult for them to overcome interference, and they may need to be retuned as the vehicle travels into range of new, interfering FM stations. Preliminary testing led by NPR suggests a Cognitive Modulator operating at 87.7 MHz may present a solution to the above service problems. Such a device would sense the amount of interference and noise (I+N) at or around 87.7 MHz and adjust its transmitter carrier power to provide a desired C/(I+N) in a vehicle’s FM radio. Experimental operation will be in New Haven, Connecticut on 87.7 MHz
• Lockheed Martin filed an application with exhibits for experimental license to operate at Syracuse, New York on various frequencies in the bands 109.375-137.000, and 960-1400 MHz. This is to test electronic-support-measures receiver systems for the US Navy on vessels being deployed overseas.
• Cosmogia Inc. filed an application with exhibits for special temporary authority to operate communications inks in support of the Dove 1 satellite mission. This is a “technology demonstration to: a) test the basic capabilities of the low-cost bus built from non-space, Commercial Off-the-Shelf (COTS) components; b) show that a bus constrained to the 3U cubesat form factor can host a small payload; and c) demonstrate the ability to design, produce and operate satellites on short schedules and low cost. Dove 1 will do this by transmitting health and payload data to the ground.” The satellite is due to be launched as a secondary payload on the maiden flight of the Taurus II from NASA’s Wallops Flight Facility. It will be placed in a nearly circular orbit of 280 km, which will decay with the satellite burning up in the Earth’s atmosphere approximately 2 weeks after launch. Amateur beacon transmissions on 145.825 MHz will commence upon deployment of the satellite and a half-duplex, spread spectrum radio on 2.4016-2.4776 GHz will be used for main payload downlink and telecommand uplink. The satellite has dimensions of 10 cm x 10 cm x 30 cm. Its mass is about 5 kg.
• The Wisconsin Wireless and NetworkinG Systems (WiNGS) Laboratory at the University of Wisconsin, Madison, filed anapplication with exhibit for experimental license to test fixed point-to-point backhaul and vehicular networking on TV white spaces. Operation will be in the vicinity of Madison, Wisconsin on 174-216, 470-608, and 614-698 MHz. The platform to be used is called Wide Band Digital Radio. Its major function is to perform frequency translation from Wi-Fi frequencies in the 2.4 GHz range to UHF-TV frequencies.
• Lockheed Martin filed an application with exhibits for experimental license to conduct radiosonde factory acceptance testing as part of a government contract. During testing, the radiosondes are attached to a weather balloon and deployed from a Lockheed Martin facility in Marion, Massachusetts. The weather balloon can travel a ground distance of 250 km and reach a height of 30 km. The average duration of the deployment is 135 minutes. The expected number of deployments is about five per month. The radiosonde transmitter uses a monopole antenna that directs transmitted power towards the ground. Testing will take place on various frequencies between 400.25 and 405.5 MHz.
• Carlson Wireless filed an application with exhibit for special temporary authority to test white space radio technology in rural locations of Hawaii prior to database and device certification. This is to compare performance of white space radio propagation to that of WiMAX and 900 MHz radios in very dense tropical cover and in heavy rain conditions. Operation will be in Pahoa, Hawaii and in Keaau, Hawaii on 470-608 and 614-698 MHz.
• America’s Cup Event Authority, LLC filed an application withexhibit for special temporary authority to permit video production, and to coordinate operations and security for the Americas Cup World Series Sailboat Race in the vicinity of San Diego. Several frequency bands are requested including 470-476, 476-482, 482-488, and 506-512 MHz (i.e., television broadcast channels 14, 15, 16 and 20), television broadcast auxiliary frequencies for video production at 2025-2110 MHz, and amateur allocations at 2390-2400 MHz and 3300-3500 MHz.
• Robert Miller Consulting filed an application with exhibits for special temporary authority to operate on TV channel 44, 650-656 MHz, near Green Bay, Wisconsin to conduct research on the effects of wind turbines on over-the-air TV reception. In the view of the applicant, the “proliferation of wind turbine deployment and the associated history of television interference problems have prompted an urgent need for development of tools to assist in the placement of the turbines so as to minimize interference.” This exercise is funded by the U.S. Department of Agriculture, and there is the prospect of more funding for more exhaustive tests depending on initial test results.
• ShawnTech Communications filed an application with exhibits for special temporary authority to operate in Ridgeville, South Carolina on 851-869, 869.2-893.8, 869.70-893.31, 1930.2-1989.8, and 1931.25-1988.75 MHz. Details are not available due to a request for confidentiality. This appears to be a test of a managed-access cellular system for intercepting unauthorized phone calls from a prison. It further appears that a cellular operator gave its consent for the test.
• Boeing filed an application with exhibits for special temporary authority to test RFID tags that Boeing and commercial airlines use on various items aboard commercial aircraft. The device being used is certified for unlicensed use in Europe but not in the US. Goodyear, Arizona on 865-867 MHz.
• The South Coast Air Quality Management District filed andapplication with exhibits for experimental license to operate a wind-profiling radar, which depends on the scattering of transmitted signals by irregularities in the index of refraction of the atmosphere. The irregularities are caused by turbulence in the wind. By determining the Doppler frequency shift, the speed of the wind can be determined. Temperature data can be obtained by measuring the propagation velocity of an acoustic signal. The hardware involved will be a receiver/modulator, a final amplifier/preamplifier, a digital control and data processor, and an antenna system. These items were developed by NOAA and are fabricated by Vaisala, and will be owned and operated by the applicant, a government agency that manages air pollution control in the southern California counties of Los Angeles, Orange, Riverside and San Bernardino. The data collected will include hourly profiles of low-level winds between 100 and 5000 meters above ground level (m AGL) and “virtual temperatures” between 100 and 2500 m AGL. This data will be collected to improve meteorological analyses, as well as air quality forecasting and modeling in the South Coast Air Basin. Operation will be on 915 MHz at Irvine, California.
• Harris filed an application with exhibits for experimental license to test transmission and reception of voice and data from 1.35 GHz to 1.39 GHz at various distances and locations at its facility in Rochester, New York. Stationary and mobile tests will be performed to transmit voice and data in both urban and rural settings. Tests will replicate in-theater tactical communications. This testing is partly in support of U.S. government contracts. The tests will use the Harris AN/PRC 117G wideband tactical radio.
• BAE Systems filed an application with exhibit for special temporary authority to test next-generation “communication intelligence” for unmanned aerial vehicles (UAVs). Operation will be in Hudson, New Hampshire on 1626-1660 MHz.
• Orbital Sciences filed an application with exhibits for experimental license to operate from Persimmon Point, Virginia on 2222-2228, 2239-2243, 2258-2260, 2267-2271, 2286-2290, and 5764-5772 MHz. Orbital is under contract to NASA/Johnson Space Center to develop a commercial cargo transportation system for delivery of cargo to the International Space Station. The contract includes two demonstration flights of this system, and eight operational flights to the Station. The experimental operation is in support of various communications needs for these flights from NASA’s Wallop’s Flight Facility, including flight termination system uplink, multiple S-band telemetry data downlinks, a C-band radar system with transmit and receive, and a GPS uplink. 
• RF Film, Inc. filed an application for special temporary authority to provide wireless video transmission from film cameras during the production of “Spiderman 4” in Los Angeles. Operation will be on 2363-2371 and 2380-2388 MHz. Those frequencies are in a band normally used for aeronautical telemetry, but the applicant has consulted with the frequency coordinator for that band (AFTRCC), which approved their use on a non-interfering and temporary basis. (If then, why not other times for other purposes?)
• Google filed an application for special temporary authority to test a next-generation personal communications device it’s developing. It will test the functionality of “of all subsystems, including WiFi and Bluetooth radio. Users will connect their device to home WiFi networks. This line of testing will reveal real world engineering issues and reliability of networks. The device utilizes a standard WiFi module, and the planned testing is not directed at evaluating the radio frequency characteristics of the module (which are known), but rather at the throughput and stability of the home WiFi networks that will support the device, as well as the basic functionality of the device. From this testing we hope to modify the design in order to maximize product robustness and user experience. Utilizing the requested number of units will allow testing of real world network performance and its impact on applications running on the device, so that any problems can be discovered and addressed promptly. All devices will be used by and registered to specific individuals (all Google employees), and Google will maintain a record of each device, so that they can be easily recalled at any time during testing and when testing is complete. The devices will be tested at Google facilities and in and around the employees residences.” There will be 252 devices in the test, which will take place in Mountain View and Los Angeles, California; Cambridge, Massachusetts, and New York, New York on 2400-2483 MHz.
• AirScan filed an application with exhibits for experimental license to test “state‐of‐the‐art airborne surveillance and security operations for government and private service customers.” Transmissions will be from aircraft in the Titusville, Florida area on 2475.5 and 2458.5 MHz.
• Panoscan filed an application with exhibits for experimental license to test video transmission from a robot it’s developing for law enforcement inspection purposes. Operation is to be in Sylmar, California on 5725-5858 MHz. The transmitter is an Iftron Mondo Stinger 5.8 video transmitter. Apparently, prior work in development of the radio portion of the robot fell under Part 15 of the FCC’s Rules, and now it does not, necessitating the experimental license. Panoscan says it has a request pending before the Commission for waiver of Section 15.247 of its Rules to allow the use of digital modulation.
• GE Aviation filed an application and exhibits for special temporary authority to conduct outdoor testing of its HEET radar system, a “proprietary three-dimensional radar scanner for radar cross section measurements. This one of a kind scanner is currently in checkout phase. Eventually the system will be used on military bases.” Operation will be in Evendale, Ohio and in Peebles, Ohio on 6.5-18 GHz.
• Telephonics Corporation filed an application with exhibits for experimental license to operate in Huntington, New York on 8850 MHz. This to support testing of the ARSS-1 portable radar system. The radar operates on a single channel at a pulse repetition frequency of 5 kpps. The pulse width is 17.0 μS and the receive interval is 183 μS for a total repetition interval of 200 μS.
• Telephonics Corporation filed an application with exhibit for experimental license to conduct tests of its model RDR-1700Bmaritime surveillance and imaging radar, which the company describes as a multimode airborne search radar that uses pulse compression techniques to provide various search and imaging capabilities, using a programmable waveform generator that can generate different pulse widths, pulse repetitions, and modulation. The radar operates over the frequency band of 9.2 to 9.5 GHz. Using frequency agility the radar is continuously changing frequency thereby minimizing the number of undesired pulses being received by fixed-frequency marine and aviation weather radars. This testing is to improve the radar’s signal processing techniques for the purposes of improving the radars ability to search, detect and track multiple targets during over water surveillance as well as search and rescue and weather detection/avoidance capabilities. In addition, development of imaging techniques that provide the ability to identify the size and shape details of objects detected beyond visual ranges or bad weather conditions will also be part of the testing. Operation will be in the vicinity of Farmingdale, New York.
• The University of Nebraska – Omaha, filed an application andexhibits for special temporary authority to test repurposing ofFuruno marine radar to count aircraft at a non-controlled airport. Operation will be at the Council Bluffs, Iowa airport on 9410 MHz. The applicant says it wants to investigate marine radar in this application as a step toward creating a system to prevent aircraft collisions. The radar system in this experiment will include a stationary radar antenna linked to a 10 inch radar display that will transmit data to a computer, which will be programmed to count aircraft. The data being transmitted includes, among other things, the distance from the radar, the heading from the radar, and the heading of the aircraft.
• Tachyon Networks filed an application with exhibits for special temporary authority to test an 18” terminal mounted to a C-12 military aircraft. Communications will be with one of three Intelsat-owned, U.S. licensed satellite hubs. This is in support of a U.S. Army contract for communications in Afghanistan related to airborne intelligence, surveillance and reconnaissance. Operation will be centered on Middletown, Delaware on 14.0-14.5 GHz.
• Mokulele Research Corp. filed an application with exhibits for special temporary authority to test airborne mechanical tracking antenna performance. Mokulele will use millimeter-wave spectrum from a directional antenna on the ground pointed straight up. The airborne receiver antenna, installed inside the cabin of a small aircraft, will intercept the narrow beam, and immediately activate its reflector to the optimum angle in order to sustain strongest signal level, while the aircraft’s pitch and bank angles change. The aircraft will fly over the ground station between 8,000 and 18,000 feet AGL in tight circles of approximately 0.5 nautical mile diameter. The signal strength, optimized by the tracking antenna, will be recorded for later analysis. An airborne-antenna signal re-acquisition algorithm will also be evaluated. Operation will be on 46.75-46.95 GHz at Haleiwa, Hawaii.
• Honeywell filed an application with exhibits for special temporary authority to conduct flight testing using a developmental sensor to collect data on potential helicopter obstacles such as power lines and towers. The data collected will be used to learn about the detection criteria of such targets. Operation will be in Torrance, California; Phoenix, Arizona; and Everett, Washington on 92-94 GHz. The sensor antenna connects to a PC‐based data processing system used to operate the antenna, display, and capture results. The antenna radiates a 0.7 degree horizontal by 4.0 degree vertical beam. The modulation is a linear frequency modulation that utilizes up to a total of 1.0 GHz about a center frequency of 93.0 GHz (i.e., 92.5 GHz – 93.5 GHz). The bandwidth is swept repeatedly at a rate of 500 us per sweep.
• Raytheon Missile Systems filed an application with exhibit for special temporary authority to conduct tests on 94-96 GHz at Tucson, Arizona. “The current system under development is a directed energy device that uses directed radio signals. This application is being filed for the experimental development of a directed energy device to be exported that will use radio waves to achieve the mission.” (“Directed energy device” appears to be a euphemism for directed energy weapon.) “Because this technology is very new, there is a great deal to be learned still about how to effectively direct the radio energy while ensuring that there is no lasting harm.” Furthermore, “any personnel present will have volunteered to work on this technology.” The device to be tested will have an input power of 800 watts and an effective radiated power of 50 megawatts.

• Amateur Radio operator Juan Granados filed an application with exhibit for experimental license to test CW, LSB, RTTY, and digital modes such as BPSK on 130-140 kHz and 495-505 kHz. The testing will take place in Miami, Florida and involve communication with amateurs in other parts of the world.

• Cognitive Data Dispatch (CDD) filed an application with exhibits for experimental license to “explore the possibility of a cognitive type of radio architecture in transmitting very brief time duration data transmissions over a HF radio channel.” “CDD is seeking authority to transmit data in a point-to-point mode using a minimal spectral footprint (utilizing a channel for less than 10 milliseconds at a time, not to exceed 250 milliseconds of total occupation during any 24 hour period) on pre-coordinated HF frequencies using fixed transmit and receive locations. These extremely brief time duty duration transmissions will ensure no harmful interference will occur to any licensed users of these channels. As part of the channel selection process, CDD transmissions will employ cognitive radio features to ensure the optimum transmission channel and minimal opportunity for interference.” Operation will be from sites in Aurora, Illinois; Washington, DC; and East Rutherford, New Jersey on various frequencies from 2.2890 MHz to 7.6971 MHz.

• RIIMIC LLC, d.b.a. Sunair Electronics filed an application with exhibit for experimental license to conduct testing of single-sideband communications equipment in Ft. Lauderdale, Florida on 5.888-23.1465 MHz.

• Lockheed Martin filed an application with exhibit for experimental license for control operation of the AN/WLD-1(V) Remote Multi-Mission Vehicle (RMMV) in support of the US Navy’s Remote Minehunting System (RMS) and Multi-Vehicle Communication System (MVCS) programs. This experiment is said to be necessary for development and integration of the radio communication link between the control and remote stations. Operation will be in West Palm Beach, Florida on various frequencies between 30-40 MHz and 1708-2297 MHz.

• Signal Systems Corporation filed an application with exhibits (several confidential) for special temporary authority to test the utility of short duration messaging in the VHF band using meteor burst communications). Data rates will be up to 9600 bps. Operation will be in Ridgley, Maryland and Blacksburg, South Carolina on 40.75 and 49.8 MHz.

• Live2Media filed an application with exhibit for special temporary authority to test “media broadcast” at an auto race event. The broadcast will consist of messages from the pit crew to the race car, along with announcements. Operation will take place in Laguna Seca, California on several frequencies between 64.0 MHz and 68.2 MHz.

• Garmin filed an application with exhibits for experimental license to test the interoperability of its avionic data link system and data link radio (GDR 66) with an ARINC ground station. The link is characterized by 8-DPSK modulation, 25 kHz channel spacing, a raw data rate of 31.5 kbps, and a carrier-sense multiple-access technique for operation on a shared channel. Operation will be in Olathe, Kansas on 136.975 MHz.

• Adaptrum filed an application with exhibit for special temporary authority to experiment with prototype TV white-space equipment. The equipment is to be fully compliant with the new white space rules except for equipment authorization. Operation will be in San Jose and Mountain View, California on 174-216 MHz, 470-608 MHz, and 614-698 MHz.

• The Rappahannock Electric Cooperative (REC) filed an application with exhibit for experimental license to test the usefulness of TV white-space frequencies in, as the applicant states, “supporting smart grid fixed and mobile data connectivity. Fixed applications include long range point to multipoint backhaul of internal utility traffic including supervisory control and data acquisition (SCADA) traffic and automatic metering infrastructure (AMI) traffic, both located at REC’s electric utility substations. The AMI system also enables real-time load management thereby improving system reliability and reducing peak demand, all of which further the nation’s goal for greater energy independence and reduced carbon emissions. In terms of mobile data connectivity, REC plans to leverage this technology to test the efficacy of these frequencies for mobile workforce management applications in the utility service vehicles including processing work orders – new connects, disconnects, reconnects, and outage orders. REC also has a need to test automatic vehicle location (AVL) to optimize routing of service vehicles in real time.” Operation will be in several Virginia communities on 174-216 MHz.

• The Avionics Engineering Center at Ohio University filed an application with exhibits for experimental license to operate in support of research on the Joint Precision Approach and Landing System (JPALS). The system is intended to provide fixed and mobile precision approach and landing systems that will support a 200 feet decision height and 0.5 statute mile visibility while operating in military or civil modes. The system will also support auto-land capability for suitably equipped aircraft (to include Army, Navy, Marine Corps, and Air Force aircraft) and operate in a GPS-jamming-threat environment. Operation will be in Albany, Ohio on 240.650 MHz and 280.975 MHz.

• Lockheed Martin filed an application with exhibits for experimental license to “perform testing on a Low Frequency Sensor (LFS) radar that will be used for long range detection. The testing will evaluate the sensor detection performance and antenna characterization of the radar.” The test antenna will be log periodic with a gain of 6 dBi and beamwidth of 103 degrees. ERP will be variable up to 10 watts. Operation will be in Syracuse, New York on 420-450 MHz.

• KTS Wireless filed an application with exhibit for experimental license to test a TV white-space system in an orange grove located southwest of Clewiston, Florida. The intent is to apply TV white spaces to the problem of enabling automation for sustainable specialty crop farming. “The current implementation requires a multi-radio solution in several bands with multiple repeaters which is problematic in an industrial environment.” The white-space method is intended to allow a single base-station solution. Operation will be on 470-608 MHz and 614-698 MHz.

• Google filed an application with exhibit for experimental license to operate in support of experiments in TV white spaces in the bands 512-602 MHz and 620-698 MHz. “Google will conduct research and experiments of fixed and personal/portable devices within the white spaces to determine the potential utility and feasibility of such operations and technology. Google requests authorization within the geographic coordinates of its Mountain View, California campus. Google plans to operate up to three fixed base stations at 4 W per 6 MHz channel available, with a radius of operation of 5 miles (8.05 km), and up to 50 mobile stations at 100 mW per 6 MHz channel available.”

• Quantum5x Systems filed an application for special temporary authority to test a “new type of wireless microphone with a rubberized housing and internal antenna, as well as addressing de-sense and intermodulation correction technology.” Operation will in New York, New York on 600-608 MHz and 614-689 MHz.

• Lockheed Martin filed an application with exhibits for special temporary authority to test its “MONAX Cellular solution along the southwest border of Texas. This operation will be supporting evaluation by local and state authorities of the MONAX solution for utilization in securing the border with Mexico.” “MONAX is a powerful, new communications system that combines the convenience of smartphone technology with the power and flexibility of a secure, highly portable infrastructure.” “The 4G wireless system, consists of a unique portable MONAX Lynx sleeve that connects touch-screen COTS [commercial off-the-shelf] smartphones [which look similar to iPhones] to the MONAX XG Base Station infrastructure on the ground or in airborne platforms, offering uninterrupted service to warfighters in the field.” “MONAX offers a rich set of applications and governance, leveraging commercial smartphone application development and application store model. Applications can be easily written or re-hosted on a smartphone, reviewed/approved for mission effectiveness, hosted in a 24×7 app store and made available to the warfighter.” Operation will be near Finlay, Texas on 758-763 MHz and 788-793 MHz.

• Vodafone filed an application with exhibit for experimental license to “test and demonstrate advanced Internet services in . . . GSM, HSPA and LTE environments, such as GPRS (general packet radio system), location-based services, transcoding between email, SMS, and WAP, and secure position/mobile-commerce services.” Operation will be in Redwood City, California on 842-850 MHz, 890-893 MHz, 935-938 MHz, 1920-1936 MHz, 2110-2126 MHz, 2500-2520 MHz, and 2620-2640 MHz.

• Western DataCom filed an application with exhibit for experimental license to test UMTS wireless devices used by the Intelligence & Information Warfare Directorate of the US Army Communications Electronics Research, Development, and Engineering Center. The system is to be used for transmission and reception of voice and data within a single network; it does not connect to any other provider’s network. Operation will at Fort Dix and Lakehurst, New Jersey, on 900-915 MHz, 945-960 MHz, 1755 MHz, 1850 MHz, 1972.4-1977.4 MHz, and 2162.4-2167.4 MHz.

• General Dynamics filed an application with exhibits for experimental license to conduct testing in support of its Labrador program, which is intended to develop methods for locating and identifying radio frequency signals using a variety of devices. The project requires communication between collaborating software-defined radios. Operation will be in Ypsilanti, Michigan; Bloomington, Minnesota; Tucson, Arizona; and Austin, Texas on 902-928 MHz, 1350-1390 MHz, and 1755-1850 MHz.

• Wal-Mart Stores filed an application with exhibits for experimental license to conduct RFID research at its lab in Fayetteville, Arkansas. This research relates, in part, to optimal placement of RFID tags on cases, pallets and assets. “The experimentation will include RFID tagged cases going through a simulated supply chain. This will include testing in a dense reader mode environment. Additional testing will be conducted using RFID enabled handhelds for inventory collection, product locating and product receiving in a simulated store environment. RFID readers fixed to mobile assets (forklifts, carts, wearable devices) will be tested using this site license to ensure that solutions developed using RFID readers in the United States will meet the given performance criteria across all other regions worldwide within which Wal-Mart operates.” Operation will be on 902-928 MHz.

• General Electric Global Research filed an application with exhibits for special temporary authority to test a microwave imaging system for non-destructive testing of in-service wind turbine blades. Operation will take place in Schenectady, New York. The signal will be a broadband linear chirp swept from 1 GHz to 18 GHz up to 10 times per second.

• Rockwell Collins filed an application with exhibit for special temporary authority to develop and test equipment used in the Aeronautical Mobile Satellite Service. Four Inmarsat geostationary satellites will be used. Operation will be nationwide on 1626.5-1660.5 MHz.

• BAE Systems filed an application with exhibit for special temporary authority to conduct proof-of-concept tests for the next generation of communication-intelligence unmanned aerial vehicles (UAVs). Operation will take place in Hudson, New Hampshire on 1760-1840 MHz, 2365-2445 MHz, and 10.25 GHz.

• Ericsson filed an application and exhibit for experimental license to conduct tests related to 3G and LTE application performance. “This investigation will examine a new aspect of network performance and will contribute to expansion of the mobile ecosystem. Historically, the wireless industry has relied solely on bandwidth or transmission rates to assess performance. However, the expanding variety of applications that will run over networks indicates that network performance should also be investigated through the lens of application performance. The uniqueness of the planned experiment is to understand the performance of new, varied applications and services on mobile networks.” Operation will take place in San Jose, California on 1920-1930 MHz, 2110-2120 MHz, 2500-2520 MHz, and 2620-2640 MHz.

• Space Exploration Technologies filed an application with exhibits for experimental license to operate in support of R&D for a Vertical Takeoff, Vertical Landing (VTVL) vehicle on its test site in McGregor, Texas. The vehicle is to take off, ascend vertically to a low altitude, and then descend back to its original landing spot. “The tests themselves are divided into low‐altitude and higher‐altitude tests. The low‐altitude tests stay below 215 meters in altitude and last approximately 45 seconds. These tests will be run approximately three times per week during the initial portion of the program. The higher‐altitude tests can go as high as 3.5 km and will occur approximately once per week. These tests last approximately 3 minutes.” A downlink is used so operating parameters can be viewed in real time. An uplink is used in case of an anomaly, so the vehicle can be commanded into a safe state. Operation will be on 2040.5675 MHz, 2221.5 MHz, and 2273.5 MHz.

• Space Exploration Technologies filed an application with exhibit for special temporary authority for “telemetry and video transmissions during launch (and pre-launch checks) for an orbital test flight of the Falcon 9 launch vehicle from Cape Canaveral, pursuant to the Commercial Orbital Transportation Services (COTS) Demonstrations agreement with NASA. The launch date is currently scheduled for November 30, 2011.” “The purpose of the operation (the Demo C2/3 mission) is to demonstrate the capability to launch a capsule that can dock with the International Space Station.” “[S]pectrum support for the capsule is already being handled by NTIA (via NASA). Accordingly, STA will only cover the launch vehicle stages (first stage and second stage), during launch, as well as pre-launch checks.” Operation will be on 2213.5 MHz, 2221.5 MHz, 2251.5 MHz, 2273.5 MHz, and 5765 MHz at Cape Canaveral, Florida.

• Panasonic Avionics Corporation filed an application with exhibits for special temporary authority to conduct ground testing of potential interference from portable electronic devices (PEDs) in aircraft. This is in support of Panasonic’s Global Communications Suite (“GCS”) featuring the “eXConnect” Ku-band aeronautical mobile-satellite service system providing broadband connectivity on the aircraft during flight. Testing will be in Everett, Washington on 2386-2505 MHz, 5150-5350 MHz, and 5715-5835 MHz.

• Gibbons Systems Inc. (GSI) filed an application with exhibit for special temporary authority to test a new air-to-air ranging system as part of a contract with Wright-Patterson Air Force Base. The applicant is developing the system to “fundamentally improve radio ranging among the C-130 fleet deployed by the United States Air Force. Currently, the C-130 fleet utilizes high powered radio transmissions, similar to radar, for maintaining formation, which nonetheless render the formation highly detectable and, thus, vulnerable to enemy monitoring. The GSI RF technology employs several techniques (including low duty cycle, low total signal energy, and high bandwidth) to render the signals difficult to detect, i.e. ‘low probability of detection’ (‘LPD’). “Operation will be in Redwood City, California on 2500 MHz.

• Aurora Flight Sciences filed an application with exhibit for experimental license to operate in support of the development of an Unmanned Aircraft System (UAS). The applicant says existing data-link systems don’t provide the necessary data rate of 10 Mbps. An auto-tracking antenna, designed for use with this system, combines a high gain directional dish, a low-gain omni-directional antenna, and associated auto-tracking hardware. The omni-directional antenna is for close-in operation of the aircraft, such as during takeoff and landing, where the angular velocity of the aircraft relative to the antenna is too great to track. The high-gain antenna is for long-range operation. “The auto-tracking antenna is provided with the GPS position of the aircraft. Tracking is accomplished using a combination of GPS and signal strength. Signal strength is used to find the aircraft when the tracking is not locked, and GPS is used to follow it thereafter.” Operation will be in Warrenton, Virginia on 4.4-4.8 GHz.

• Motorola Solutions filed an application with exhibits for experimental license to test the outdoor link performance of its RDB350 point-to-multipoint data transceiver. The intent is to test fixed and mobile outdoor data transmission for federal users. The system is based on the IEEE 802.16e standard. Operation will be in Schaumberg, Illinois on 4600-4800 MHz.

• Raytheon Network Centric Systems filed an application with exhibit for special temporary authority to test a mobile surveillance system based on commercial off-the-shelf radar, electro-optical/ Infrared cameras, and microwave communications (i.e., the Motorola PTP 48600 wireless Ethernet bridge). The system is intended to “monitor international borders.” Operation will be near Las Cruces, New Mexico on 4720-4990 MHz. A similar application was filed for operation near McKinney, Texas.

• Miltec Corporation filed an application with exhibit for experimental license to conduct tests, as part of a U.S. Army contract, in support of the Innovative Waterside Wide-Area Tactical Coverage and Homing Sensors (IWWS) program intended to detect, track, and classify people and vessels in a maritime environment above and below the surface of the water. Operation will be in Kingsport, Tennessee and Guntersville, Alabama on 9.38-9.44 GHz.

• SAIC filed an application with exhibit for special temporary authority to test“low-power land radar” on 10.25-10.50 GHz. The system uses the ELTA model EL/M 2112 radar, and might be used by the Department of Homeland Security. Testing will take place around the perimeter of Lake Moultrie in South Carolina.

• L-3 Communications filed an application and exhibit for special temporary authority to test a prototype high-capacity airborne networking system. The data links will be between a ground station and an aircraft, and between two aircraft. Operation will be in the vicinity of Monterey, California on 14.50-14.83 GHz and 15.15-15.35 GHz. “The RF transmissions will utilize root raised-cosine (RRC) shaped offset QPSK modulation, at various symbol rates, with shaping factor (alpha) of 0.33. All transmitted data will be encoded with a rate-7/8 turbo product code prior to transmission.” “All transmissions will use identical 9.5” parabolic dish antennas.”

• Raytheon Network Centric Systems filed an application with exhibit for special temporary authority to “develop and demonstrate a mobile surveillance system based on commercial-off-the-shelf radar (SR Hawk Radar SRC-2362) and electro-optical/infrared cameras to monitor international borders.” Operation will be near McKinney, Texas on 16.21-16.50 GHz.

• Raytheon Network Centric Systems filed an application with exhibit for special temporary authority to “develop and demonstrate a mobile surveillance system based on commercial-off-the-shelf radar (DRS Manportable Surveillance and Target Acquisition Radar (MSTAR)) and electro-optical/infrared cameras to monitor international borders.” Operation will be near Las Cruces, New Mexico on 16.75-17.25 GHz.

• Samsung filed an application with exhibit for experimental license to “[f]ully characterize the radio channel at mmWave frequencies for mobile, outdoor environments to understand path loss, angular spread, delay spread, NLOS beamforming and blocking issues.” “This will help design mmWave communication systems, providing multi-Gbps data rates for wireless mobile services within new spectrum bandwidth and therefore meeting the challenges raised by the on-going mobile data explosion.” Operation will be on 27.925 GHz in Richardson, Texas.

• L-3 Communications Datron filed an application with exhibits for experimental license to conduct testing of Iridium satellite system feeder-link-terminals (FLTs) related to retrofit work.” The applicant “will retrofit the current 27 FLTs to address obsolescence and maintenance issues as well as modernizing hardware and software interfaces. As many as 12 new FLTs will also be built in the future to support the latest generation of Iridium NEXT satellites currently being planned and designed.” Operation will be in Simi Valley, California on 29.1-29.3 GHz.

• Google filed an application for special temporary authority to conduct “experiments using test vehicles equipped with automatic cruise control radars in a manner that extends the sensing range of the radars when a vehicle is not in motion.” “Each Google test vehicle contains several off-the-shelf automatic cruise control (ACC) radars certified for use in the 76.0-77.0 GHz band.” “Several ACC radars will be mounted on test vehicles and the vehicles will be driven through a variety of traffic situations, including along freeways and urban surface streets and through complex intersections. The radars will operate at a radiated power of 60 uW/cm² at 3 m (i.e., the current in-motion criterion) both while the vehicles are in motion and stationary. Because the power will not exceed the current in-motion criterion, Google believes the experiments will not increase the likelihood of harmful interference to any user.” Operation will be in the San Francisco Bay area. (The FCC has separate in-motion and not-in-motion emission limits for these vehicle radars to prevent prolonged human exposure to RF energy while the vehicle is stopped. I thus find it odd that Google links the in-motion criterion to “interference.”)

• Sierra Nevada Corporation filed an application with exhibit for experimental license to conduct ground testing of an Autonomous Landing Guidance (ALG) radar system. This is intended to allow “a fixed wing aircraft pilot to safely execute takeoff, approach, and landing maneuvers in low visibility conditions such as that caused by thick fog or blowing sand and dust.” “The ALG system is a derivative of other Sierra Nevada Corporation (SNC) products currently in evaluation programs that provide similar landing situational awareness for rotor wing aircraft pilots. ALG is a millimeter wave (MMW) frequency-modulated continuous wave (FMCW) radar with a narrow 1.0 beamwidth that is scanned over a 25° by 10° field of regard twice per second. During the scan the radar return data is processed by computer to extract the amplitude and the range to the ground. The computer accumulates all of the range and amplitude data over the field of regard and displays a three-dimensional representation of the ground to the pilot on a flight deck display.” This ground testing is a prelude to flight testing, at which time Sierra Nevada will apply to modify its experimental license. Operation will be at several California and Nevada locations on 94 GHz.

Gerald Whitney filed an application with exhibits for experimental license to test a prototype AM broadcast transmitter system covering 2-16 MHz at a carrier power of 1 kW. The system, part of a U.S. Department of Defense project, includes a frequency-agile transmitter, antenna tuning unit, and antenna. Testing will be done in Victor, New York.

Curtis-Wright Controls filed an application with exhibit for special temporary authority to demonstrate its 3d-Radar brand of ultra-wideband ground penetrating radar (GPR) for prospective non-federal customers as it awaits expected FCC grant of its Part 15 waiver request for the device. Operation will take place at various locations in the U.S. on 140-3000 MHz, with frequency notching to preclude transmissions in the bands 608-614 MHz, 1400-1427 MHz, 1660.5-1668.4 MHz, and 2690-2700 MHz, in accordance with an NTIA authorization. The company filed its Part 15 waiver request with the FCC in June 2010 seeking authorization to operate the device for non-federal use (ET Doc. No. 10-167). The company understands the FCC’s Office of Engineering and Technology is working on an order that would permit non-federal use of the device. The company notes that NTIA, with FCC coordination, has already approved the use of the device for federal use on a nationwide basis.

Carlson Wireless Technologies filed an application with exhibit for special temporary authority to test voice and data connections among multiple Chevron Oil oil-field facilities using TV white space frequencies. Test results will be compared to the performance of a current 900 MHz system. Operation will be at several California locations in the 174-216 MHz and 470-698 MHz bands.

Southern Methodist University filed an application with exhibits for experimental license to operate a cognitive radio testbed. The testbed is backed by a National Science Foundation grant.  Operation will be on several frequency bands between 400 MHz and 6100 MHz in the Dallas area. The testbed will be used to study wireless performance in mobile and stationary environments. Featured in the testbed is real-time multi-band operation, which can be used to aid design of context-aware and cognitive algorithms that use multiple frequency bands to adapt to dynamic environmental conditions. One goal of the research is to develop an open-access database of wireless performance in multiple scenarios.

L3 Nova Engineering filed an application with exhibits for experimental license to demonstrate a seismic activity sensor network. Testing will take place in Great Falls, Virginia on 420-440 MHz.

Sierra Nevada Corp. filed an application for special temporary authority to test equipment that will facilitate formation flight between two aircraft. This supports DARPA’s Global Hawk autonomous aerial refueling demonstration program that is intended to accomplish the first-ever fully autonomous rendezvous, refueling, and formation flying of two unmanned aircraft. Each node of the system consists of a GPS receiver, processor, and other equipment including the UHF data link that is the subject of this application; one node would transmit data to the other such that the receiving node would be able to calculate its position and orientation relative to the transmitting node. The testing will take place in Salt Lake City, Utah on 420.25-426.60 MHz.

Raytheon BBN Technologies filed an application for special temporary authority test distributed-transmit beamforming using RF modules developed under DARPA’s Precision Electronic Warfare (PREW) program. “Specifically, BBN Technologies seeks to demonstrate the capability to synchronize clocks from up to 10 RF modules remotely using UHF band frequencies, and project RF energy at specified frequencies that results in the coherent combining of focused power within a small geographic area of interest using the these radios to enable high data rate transmissions and longer ranges.” According to DARPA, “the goal of the Precision Electronic Warfare (PREW) program is to demonstrate technologies and a prototype system that will enable the fielding of an ad hoc sparse array consisting of multiple airborne and/or ground nodes that can perform surgical jamming. The PREW system should be able to project RF energy that results in the coherent combining of focused power within a small geographic area of interest (AOI). When operating outside the AOI, the system must minimize the coherency of the RF energy to limit the impact to collateral systems.” Testing will occur at Sky Meadow State Park, Delaplane, Virginia on 437-493 MHz, 877-953 MHz, and 2400-2480 MHz.

Airvana filed an application with exhibit for experimental license to develop and test prototype LTE infrastructure equipment on 698-716 MHz, 728-757 MHz, 776-787 MHz, 806-824, MHz, 851-869 MHz, 1910-1915 MHz, and 1990-1995 MHz. Airvana says it will evaluate handoff performance among sectors, network capacity, quality of service, multi-path performance, average data rates, and interference performance. The testing is to take place nationwide.

Lockheed Martin filed an application with exhibits for experimental license to conduct testing in support of the Extended Area Protection System (EAPS) missile test program under sponsorship of the U.S. Army. The EAPS interceptor is a small ground-launched missile system under development as a performance demonstration program of hit-to-kill technology. The hardware requiring licensing consists of two systems. The first is the telemetry system providing downlink of flight telemetry data from the interceptor to a launch control trailer. The second is the unmanned ground system that provides uplink of flight control data from the launcher control trailer to the interceptor. Testing will take place in Texas on 2270.5, 2280.5, 2281.5, 4401.5, 4410.5, and 4411.5 MHz.

Bell Helicopter Textron filed an application with exhibits for experimental license to conduct testing and development in support of eventual unmanned helicopter flights. Testing will take place in the vicinity of Arlington, Texas on 2282.50 MHz.

Teletronics Technology Corp. filed an application with exhibits for special temporary authority to test a new transceiver with both OFDM and burst-mode shaped-offset QPSK (SOQPSK). The transceivers are said to provide “maximum transmission and reception distance under harsh environmental conditions.” Operation will be in the vicinity of Newtown, Pennsylvania on 2360-2390 MHz.

North American Eagle, a project testing the capability of a land-based vehicle to safely transition through supersonic speed, filed an application and exhibits for experimental license to operate a Wi-Fi network consisting of five Tropos model 7320 mesh routers mounted on eight-meter towers and one Tropos model 4310 mobile-mesh router mounted in the vehicle’s nose cone. Video and vehicle operational data will be sent to the base stations. Operation is to take place on dry lake beds near Black Rock, Nevada and Diamond Valley, Nevada on 2400-2483MHz (for data) and 5725-5850 MHz (for video). Transmitter output power will be 30 watts. (Wi-Fi at 800 MPH will be a challenge.)

Raytheon filed an application with exhibit for special temporary authority to test a critical-infrastructure-protection radars system. The system uses a p0-degree-quadrant staring radar with moving target indication designed for perimeter intrusion detection applications around secure facilities such as airports, seaports, utilities and other critical infrastructure. The system is based on Raytheon’s SR1500 Short-Range radar, which is under development. The plan is to deploy a network of low-power, short range (1.5 km) radars at fixed locations around critical infrastructure sites of the Port Authority for New York and New Jersey to provide perimeter security. An Ethernet-based network provides communication between multiple radar and electro-optic sensors. Testing will take place at various locations around New York City on 3100-3500 MHz.

L3 Communications filed an application and exhibits for special temporary authority to test a SONAR telemetry transmission system for military use. The system would send SONAR data from a small boat at a rate of 10 Mbps. The link will also carry video from cameras on the boat to allow operators to confirm normal operation of the hardware. The SONAR data and video will be transmitted to a larger manned ship at a range of a few miles. Testing will take place on the Pacific Ocean, between San Pedro and Catalina Island, in the bands 5200-5679 MHz and 5689-5800 MHz.

Laufer Wind Group filed an application with exhibits for experimental license to conduct tests in connection with the development of a radar-activated FAA obstruction lighting system for wind farms. Testing will take place in New York and New Hampshire on 9380-9440 MHz.

Lockheed Martin filed an application with exhibits for special temporary authority to evaluate Ku-band satellite technology for high-data-rate communication to helicopters. It intends to test ViaSat’s proprietary technology said to maintain the flow of data transmission in the presence of momentary path blockage from rotor blades. Test antennas will be mounted on stands underneath the rotor blades. Testing will be in Owego, New York on 14.0-14.5 GHz.

Raytheon filed an application with exhibit for special temporary authority to test a radar system for mobile surveillance system based on the DRS MSTAR commercial-off-the-shelf radar. The radar, in conjunction with electro-optical/infrared cameras, is intended for use in monitoring international borders. Testing will take place near McKinney, Texas on 16.75-17.25 GHz.

General Dynamics filed an application with exhibit for experimental license to operate an airborne radar system in support of ground imaging research using synthetic aperture radar techniques. Separate transmit and receive antennas would be mounted to a rotational pedestal on the underside of an aircraft. The gain of the antennas is 40 dB at 94 GHz, and they have a 1.5 degree half-power beamwidth in both the azimuth and elevation planes. The radar will use a pulsed linear-FM chirp waveform, centered at 94 GHz with a bandwidth of 600 MHz. The width of the waveform pulse will be approximately 20 microseconds and operate at a pulse repetition frequency of approximately 10 kHz. Peak ERP will be 5,000 Watts. Operation will be in the vicinity of Ypsilanti, Michigan.

Ducommun LaBarge Technologies filed an application with exhibits for experimental license to test its model SG-DDR50 security system, a directed-energy weapon that uses millimeter-wavelength energy to “stop, deter, turn back, and otherwise discourage a trespasser, thief, or belligerent and threatening person at relatively long distances.” “The system consists of an electrical power source, a device producing millimeter wavelength electromagnetic energy, an energy director projecting a narrow energy beam towards a target, and mounting and connecting equipment.” “The SG-DDR50 uses the susceptibility of skin nerve endings to millimeter-wavelength electromagnetic energy to report a sensation of intense undesirable heat on the skin of the person in the energy beam, all while doing no harm.” “The purpose of the experimental license is to align the system to operational specifications using infrared imaging of patterns on a sensitive carbon impregnated teflon [sic] target . . ..” Testing will occur in Huntsville, Arkansas on 94.5-95.0 GHz. Transmitter power and ERP are both specified as 800 Watts on the FCC application form. According to the applicant, “[t]he nature of this test configuration does not lend itself to be characterized by traditional measures, such as ERP, ERIP, Peak Power, and the like.”

The due date for comments was July 25; reply comments are due August 24. (You can look at the comments and submit a reply through the first link above.) Comments and reply comments were originally due 30 days earlier; the FCC granted a request for deadline extension filed jointly by Verizon Wireless and Wilson Electronics (a booster vendor), who cited progress toward a solution that could benefit both manufacturers and carriers. They’ve submitted a joint proposal and I’ll spend most of this article looking at that.

As to the other comments, there are booster vendors naturally arguing for flexibility in design and operation. The in-building distributed antenna system folks are fine with boosters but don’t want any new rules to harm them. Public interest groups don’t want boosters tied to any one carrier, and want simple designs to keep the cost down. A company called Smart Booster brings concepts from dynamic spectrum access to boosters – intelligent units that know when and where to amplify or not. As noted above, the rulemaking proceeding also deals with Part 90 and Part 95 services; APCO addresses concerns about interference and unauthorized use in Part 90, and WCAI discusses various issues related to Part 90 and Part 95.

Most noteworthy, in my view, is the joint agreement among Verizon Wireless, its wireless engineering consultant V-COMM, and Wilson Electronics, that specifies requirements for the design, operation, and installation of boosters to help avoid harmful interference. This is a significant achievement for parties who are traditionally adversaries. The agreement provides for three categories of signal boosters: Carrier Installed Boosters, Certified Engineered and Operated Boosters, and Consumer Boosters. I’ll briefly discuss the first two, and spend some more time on the third.

The Carrier Installed Boosters would be installed by FCC licensees to operate exclusively on the licensees’ frequencies. The agreement doesn’t say much else about this, but there’s not much to say. Carriers have long been free to do pretty much what they want within the broad parameters of their license, and the agreement would not change this. They’re motivated to implement hardware that won’t interfere with themselves.

The Certified Engineered and Operated Boosters would be for large areas, such as campuses or large offices (CEO – get it?), and would require professional installation and close carrier coordination. The joint proposal provides a framework for these boosters, with technical standards yet to be developed.  They would be operated under the wireless licensee’s authority.

Then we have the Consumer Boosters. Under the joint proposal, these could be purchased only by wireless service customers. They would basically be bi-directional RF amplifiers with antenna systems that transmit and receive signals using an outdoor antenna for transmission and reception to a CMRS base station, and an indoor (or in-vehicle) antenna (or direct connection to the mobile device). V-COMM provides a set of specifications for these. They’re technology neutral and intended to provide protection to all CMRS network technologies on all relevant bands. Among other things, the specifications include requirements for automatic gain control to protect against out-of-tolerance operation in instances of overload, anti-oscillation protection to limit power when the inside and outdoor antenna are too close, and limits on uplink and downlink EIRP of 1 Watt and 0.05 Watt, respectively. The uplink transmitter has to turn off if no signal is received from the mobile device in 15 minutes. Noise limits are specified.

Also part of the specifications, Consumer Boosters must be registered with the licensed carrier, either manually or through a Bluetooth connection. In the Bluetooth registration method, the booster operates as an extension to the mobile device and is controlled by it. The manual registration process provides for the customer to give their address, phone number, and other information to the carrier so  it will know whom to contact if it suspects a particular booster is a source of interference; the customer would then be expected to turn it off.

An issue with the manual method is that it requires good faith on the part of the customer.  Others commenting, including T-Mobile and CTIA, prefer that the booster be under some form of direct control by the licensee, so it can be turned off in the event of interference. Without direct control, the manual process is rather open ended. There isn’t much of an incentive for the customer to complete the registration process, registration information that is given will fall out of date, and boosters will be sold second-hand and no longer be linked to the original phone of record. WCAI goes into some of these issues in depth.

I’m surprised to see this manual approach in light of V-COMM’s position in the FCC’s experimental license proceeding (ET Docket No. 10-236), in which it opposed any experimentation by third parties in the CMRS bands due to interference concerns. As a carrier concerned about interference, I’d be less worried by Part 5 experiments than by many more boosters that are out of my direct control. But I’d also realize that many applications for boosters are now inside buildings, and deployments of Wi-Fi and femtocells will gradually displace boosters to some extent, while providing better performance. In addition, the operator may be able to tell which wireless device the malfunctioning booster is associated with and disable the device, thus disabling the booster indirectly once it times out.Still, I’m used to CMRS operators being able to control dozens of parameters on a cellphone, including those related to power control. It’s hard for me to not want control of one parameter on a booster – whether it’s on or off.

NAB – Shortages of Capacity, Not Spectrum

The NAB report is prepared by Uzoma Onyeije, a consultant who was once Broadband Legal Advisor to the Chief of the FCC’s Wireless Telecommunications Bureau. The main claims are that there is no need for an urgent and massive reallocation of spectrum, that there are numerous alternatives to spectrum that can boost network capacity, and that sources of spectrum other than TV are more readily available.

It starts by noting there wasn’t a “spectrum crisis” until the American Recovery and Reinvestment Act of 2009, which required the FCC to promote broadband access. The National Broadband Plan followed calling for 500 MHz of spectrum to be made available for broadband within 10 years, with 300 MHz of that for mobile within five years, and 120 MHz of that to come from television broadcasting. Seven months after concluding that 300 MHz was needed in the short term, the FCC released a Technical Paper intended to support the 300 MHz figure. In November I wrote on that Paper, pointing out several factors not considered that, had they been, would have acted to reduce the estimate of short-term spectrum requirements. Later, I questioned the appropriateness of the FCC relying on a forecast prepared by the marketing department of an equipment vendor, without critically and openly examining the assumptions that went into the forecast. Onyeije shares some of the concerns I had, and still do, with that Paper.

I expect the American Recovery and Reinvestment Act turned some spectrum wants into needs, but by all accounts mobile network data volumes are increasing significantly, fed by a volatile mixture of old flat-rate plans and new bandwidth-hungry devices, though the growth rate of those data volumes is decreasing. Getting additional spectrum is a natural option to consider for more capacity. Onyeije provides a list of non-spectrum options. Some have been mentioned here before – offloading to Wi-Fi and other technologies, adjusting rate plans so largest data users pay more, tighter software coding of applications and operating systems. I don’t think I’ve discussed channel bonding, which is a technique that uses non-contiguous spectrum – combining a sliver here and a sliver there. Support for this will be appearing in LTE-Advanced, going on the air in a few years. Backhaul is also something I haven’t focused on; how much of the current spectrum crunch is really due to backhaul bottlenecks?

Another capacity-increasing technique mentioned is sectorization – changing a non-directional transmission system to a directional one using two or more sectors at the same cell site. In the most congested urban areas in the US, antenna systems are generally configured with three sectors, with each sector 120 degrees wide. You don’t see many six-sector configurations, in which each sector is 60 degrees wide. Theoretically, that doubles capacity from the same tower. A long time ago there was more activity in six-sector antenna systems, but the sense then was it wasn’t too practical; you might end up with just a 70% capacity increase because of real-world issues such as imperfect antenna patterns. It was hard to justify the expense. These days, however, with better transmission technology, it should be looked at again. I note SK Telecom in Korea is deploying 500 six-sector sites, after good results with 20 test sites.

Onyeije looks at the spectrum warehousing issue. If an operator has spectrum that isn’t being used, but is on track to build it out, I’m fine if it is fallow for a year or so. Maybe longer if the delay is to wait for much more efficient transmission technology that is on track in the standards process. If it is just sitting there with no build-out requirement and no prospect for utilization, I’d think the operator’s investors would create pressure to sell it. If a spectrum holder has “no plans to sell, lease or use” its spectrum, to quote one in Onyeije’s report, I’m more concerned.

Aside from the warehousing issue, Onyeije identifies a few bands that have been languishing at the FCC for years and makes the point that, since they have been idle for so long, the spectrum crisis must not be so great. These are the AWS-3 spectrum at 2155-2175 MHz, H block spectrum at 1915-1920 MHz and 1995-2000 MHz and J block spectrum at 2020-2025 MHz and 2175-2180 MHz, 700 MHz D block at 758-763 MHz and 788-793 MHz. What’s the story there?

Onyeije suggests mandatory receiver standards. Receivers are already very good in mobile broadband because of vendor competition and the need to operate in a congested environment. Receiver design is proprietary and an important source of differentiation among vendors. I’d think continued improvement of receiver performance in the marketplace, in the long run, would achieve greater capacity benefit than imposed government standards.

The report calls on the FCC to complete and publicly release a comprehensive spectrum inventory, along the lines of the Snowe-Kerry RADIOS Act, which includes measurements. The FCC has made available several spectrum tools online, including LicenseView and the Spectrum Dashboard, which it says is its inventory. According to their disclaimers however, LicenseView “is not intended for analysis of spectrum utilization or spectrum holdings of licensees” and “the FCC makes no representations regarding the accuracy or completeness of the information maintained in the Spectrum Dashboard.” Regarding federal spectrum, I’d add that an inventory becomes more important in light of GAO’s report on NTIA processes that said “NTIA cannot ensure that spectrum is being used efficiently by federal agencies” in part because “NTIA’s data collection processes lack accuracy controls and do not provide assurance that data are being accurately reported by agencies.” Thus, “it is unclear whether important decisions regarding current and future spectrum needs are based on reliable data.”

CTIA , CEA, and WCAI dismiss the NAB report, saying it’s a stalling tactic and they know these things already. One of Onyeije’s points, however, is that it’s the Commission that needs to know these things, and fully investigate and quantify the impact of all capacity-generating alternatives. It has not. It tried with the Technical Report, but inadequately.

CTIA Establishes the Efficient Properties of Cellularization

The CTIA report is intended to demonstrate that US mobile wireless providers are “extremely efficient” in their use of spectrum. The report was prepared by Peter Rysavy, a consultant known in wireless circles for his series of technical reports, with many pertaining to spectrum, air-interface, and mobile device issues.

This report seems to be a response to an NAB claim, some time back, that broadcasting is a more efficient user of spectrum than wireless. I presume NAB’s claim is based on broadcasters’ DTV system transmitting about 19 Mbps in a 6 MHz bandwidth, while the wireless operators are sending about 10 Mbps in 10 MHz bandwidth. (So, TV has more bits per Hertz.) This is kind of an apples and oranges comparison, but the comparison has been made and we have this report in response. Having spent a lot of time in 3G and 4G standards battles, I have no doubt that those participating are trying wring out all the efficiency that is both possible and practical. Wireless standards groups sweat to get another tenth of a dB improvement. Of course, part of efficiency is an implementation issue and not covered by standards. I agree cellular services are more efficient at delivering unicast traffic. Broadcasters, however, can be more efficient in another way. The efficiency debate occurs in part because we have not agreed on a definition of efficiency. More on this below.

The CTIA paper starts with a section on spectral efficiency. It discusses its fundamental measures and technologies that have been used to continually improve it, including adaptive modulation and coding. (Rysavy says his list of technologies is not exhaustive, but to his list I’d add Hybrid Automatic Repeat Request as a key enabler.)

Rysavy observes that the industry’s technologies are operating close to the Shannon Bound, the theoretical limit on the spectrum efficiency that can be had for a given signal-to-noise ratio. Capacity improvements thus must come from advanced antenna techniques (such as MIMO) and topology evolution (e.g., adding picocells to a macrocell).

The report is hopeful on the prospects for Wi-Fi and femtocells to relieve traffic on the macro-cellular network. I’m somewhat more cautious on the potential of femtocells to relieve the capacity crunch.  For various reasons, including interference management, what I think may happen with femtocells is that they get pulled out of the home and put up in neighborhoods using existing structures for support. (The more-favorable pole-attachment rules recently adopted by the FCC are timely.) There are many small-cell trials underway but I haven’t seen much in the way of results.

Network evolution is discussed in a larger sense, focusing on developments in heterogeneous networks, but Rysavy says that’s not enough and that more spectrum is needed, too.

Back to the efficiency issue, the efficiency of cellular systems is compared to that of broadcast television. The point made is that if you take many small cells and place them within a larger area  covered by one transmitter (e.g., one for TV), the cellular system can deliver many times the unique bits in that area. This is true, if that is the definition of efficiency. Let’s look at it another way and compare the maximum number of users served by each scheme. As a best-case scenario, assume the cellular users are using a low-bit-rate application such as LTE VoIP. In 10 MHz we can support about 400 users. That times 3 sectors is 1,200 users per cell. That times 30 cells (as per the example in the paper) is 36,000 users that can be supported at once. In contrast, a TV  station covering the same area can support an unlimited number of users, albeit one-way, since it isn’t limited by uplink capacity nor MAC addresses. Is it a fair comparison? No. One is broadcasting and the other is cellular. Can’t cellular broadcast also? Yes, but to the extent it does the unique-bits argument becomes weaker. We can go around and around. The television example is used, along with other analysis in that section, in an attempt to persuade the reader that “cellular architectures represent a configuration that is capable of providing tremendous service capacity to its users.” I’m convinced, but I was before reading the report.

Rysavy depicts how voice minutes, message volume, and data volume have increased on cellular networks over the years. Yesm growth has been dramatic, but the growth rate is slowing.

Epilogue

Concurrent with this debate, ATSC is in the early stages of planning and developing the second DTV standard to replace the current one that’s been around for about 15 years. LTE specifications support broadcasting, which can be done in a cellular manner on the same frequency. Transmissions are synchronized so the terminal can combine energy from multiple sites. The broadcasters looked at cellularization a year ago assuming use of the current ATSC DTV standard, and rightly found it was not practical. It just wasn’t designed for that purpose. With the new LTE standards, it’s time to look at TV cellularization again but with LTE as a core technology. There could be a return path, inexpensive chips for receivers, and it might  be able to be done in less than 100 MHz, making over 200 MHz available for auction. With DTV, the broadcasters found significant deployment and operating costs with cellularization, but with LTE infrastructure would be shared; it remains to be determined if it’s a business. The technology is there; it just has to be architected by broadcasters and infrastructure vendors into suitable form.

UPDATE 5/20/2011

The FCC issued a Public Notice today seeking comment on using the 2 GHz bands identified as “languishing” by NAB. Some are listed above. 75 MHz total.

• Brian D. Justin, Jr., an amateur radio operator, filed an application with exhibits for special temporary authority to operate a propagation test beacon on 70.005 MHz at Bedford, Virginia. In his application, he reports an increasing interest in trans-Atlantic VHF communications by amateur radio operators, in part because of recent changes in EU regulations. A beacon would help operators know when sporadic E propagation (E-skip) conditions were good for communications near that frequency. (E-skip is enabled by scattered regions of relatively dense ionization that develop seasonally and reflect signals up to about 150 MHz.) Today, there are beacons on 50 MHz, and FM broadcast stations act as beacons in the 100 MHz range. There’s a gap at 70 MHz; AM video carriers once served as beacons (e.g., VHF channel 4 with a video carrier at 67.25 MHz), but those have gone away with the DTV transition.

• The University of Michigan’s Professor James Cutler filed an application with exhibits for experimental license to operate communication links for the Michigan Multipurpose Minisat (M-Cubed), a small student-built satellite that will capture images of Earth and transmit them to a ground station. The satellite weighs 1.3 kg and forms a cube 10 cm on a side. The imaging system consists of a 2.0 Megapixel CMOS sensor and Field Programmable Gate Array (FPGA) coprocessor. The test is to prove the reliability of the radiation-hardened FPGA in the space environment and assess the performance of the processing algorithm that will resolve the images in the satellite. M-Cubed will be launched from Vandenberg Air Force Base on a Delta-II rocket in the fall of 2011. The uplink will be on 144-146 MHz. The downlink will be on 437-439 MHz using an Astrodev Li-1 radio.

• Carlson Wireless Technologies filed an application with exhibit for special temporary authority to test TV white-space radios in rural, rugged, and forested areas. Testing will take place in various areas around New England on 174-216 MHz.

• Rockwell Collins filed an application with exhibit for special temporary authority to demonstrate its FlexNet software-defined radio technology at the 2011 Coalition Warrior Interoperability Demonstration,  an annual event directed by the Chairman of the Joint Chiefs of Staff that is intended to showcase new information technology. Operation will be on 245-327 MHz at Peterson Air Force Base in Colorado Springs, Colorado.

• Telephonics Corporation filed an application with exhibit for special temporary authority to test an existing 2.4 GHz ISM band product modified for operation in the 300-400 MHz military band. In addition to the change in frequency, the multiple-access method will be changed to frequency-hopping spread spectrum. The objective is to achieve superior communications in urban environments compared to 2.4 GHz operation. Testing will occur in Sterling Heights, Michigan.

• Panasonic Avionics Corp. filed an application with exhibit for special temporary authority to conduct ground testing in support of the Panasonic’s Global Communications Suite, featuring the eXConnect Ku-band aeronautical mobile-satellite service (AMSS) system, providing broadband connectivity to passengers in flight. Panasonic wants to test the potential for interference from transmitting portable electronic devices to aircraft avionics and communications. The test will use a signal generator to simulate the operation of multiple devices. Test results will be used to support certification of Panasonic’s aircraft equipment with the FAA. The tests will occur in Roswell, New Mexico on various frequencies between 410 MHz and 5.825 GHz.

• Carlson Wireless Technologies filed an application with exhibits for special temporary authority to test fixed white-space devices with attached cellular femtocells. Carlson Wireless and Vergennes Broadband are working jointly with Spectrum Bridge to investigate the applicability of white space spectrum for use in rural broadband applications, including support of femtocells. Operation will be in Vergennes, Michigan on 470-698 MHz.

• Microsoft filed an application with exhibit for special temporary authority to demonstrate interactive Xbox Live HD (1080p) video streaming over TV-band white-space spectrum during the April 11-14 NAB Show at the Las Vegas Convention Center. The demonstration was to incorporate Microsoft Research’s prototype white-spaces database, which controls white-space device access to help protect incumbents from interference. The frequency bands requested were 512-608 MHz and 614-698 MHz.

• Shared Spectrum Company filed an application with exhibit for experimental license to conduct tests as part of DARPA’s Wireless Network after Next (WNaN) program. The goal of the program is to “develop and demonstrate technologies and system concepts enabling densely deployed networks in which distributed and adaptive network operations compensate for limitations of the physical layer of the low-cost wireless nodes that comprise these networks.” Operation will be on 902-928, 2400.0-2483.5, 4400-4900, and 5650-5925 MHz in Stafford and Prince William Counties in Virginia.

• LightSquared filed an application with exhibit for experimental license to communicate with SkyTerra-1, a licensed and in-orbit satellite, and conduct a six-month test of two prototype models of Access Terminals (ATs) using the L-band spectrum coordinated for LightSquared’s satellite system. The ATs will transmit on 1626.5-1660 MHz and receive on 1525-1559 MHz. Testing will occur throughout North America.

• Lockheed Martin filed an application with exhibit for experimental license for flight tests of real-time video transmission using the company’s F-35 Joint Strike Fighter. The video source will be the F-35’s Electro Optical Targeting System (EOTS).  EOTS video data will be compressed and routed to an L-3 VORTEX transmitter. The transmitted signal will be received by an L-3 ROVER 5 handheld transceiver with the video displayed on a screen in the device. Operation will be at several locations around the US on 1710-1850 and 2200-2500 MHz.

• GBL Systems filed an application with exhibit for experimental license to develop, test and validate homeland security applications based on a peer-to-peer system under development by Qualcomm. Operation will be in Camarillo, California on 1915-1920 MHz.

• Row 44 Inc. filed an application with exhibit for experimental license to conduct tests using its aeronautical-mobile satellite service (AMSS) network. The tests will use a GSM picocell connected to Row 44′s Ku-band network in a simulated aircraft cabin environment. The objective is to understand the operation of GSM devices in the on-board environment. The tests will take place in Lombard, Illinois on 1930-1990 MHz.

• L-3 Communications filed an application for special temporary authority to operate on 2025-2120 MHz at Simi Valley, California. L-3 builds antennas for satellite tracking, telemetry, and control. The company says it has been experiencing high passive intermodulation (PIM) distortion that “causes transmitter noise to bleed into the receive band.” The testing is intended to resolve this problem.

• AeroVironment Inc. filed an application with exhibits for experimental license to conduct experiments with small unmanned aircraft system (SUAS) technologies intended for use by to state and local public safety agencies. Operation is to be on 4940-4990 MHz in the Camp Roberts and Simi Valley areas of California.

• Kongsberg Seatex AS, a Norwegian company, filed an application with exhibit for experimental license to test its Embedded Maritime Broadband Radio (EMBR) system. The system is intended to provide maritime users with reliable broadband data links using a system with no moving parts such as mechanically-steerable antennas. The system can operate at 5 Mbps when the distance between the nodes is up to 10 km. To eliminate the mechanically-steerable antenna, the system uses an electronically-steerable antenna array comprised of 60 antenna/transceiver sub-units. While there are other maritime broadband data link systems, such as those based on Wi-Fi and WiMAX, this system is said to outperform those due in part to a custom Physical Layer and Media Access Control Layer. Operation will be at 5220-5240 MHz on a route between Galveston, Texas and a Shell oil drilling rig in the Gulf of Mexico.

• Raytheon Network Centric Systems filed an application with exhibit for special temporary authority to test its Pathfinder maritime radar system in border surveillance applications.  Operation will be on 9.41-9.71 GHz in McKinney and Falcon, Texas.

• SRC Inc. filed an application for special temporary authority to conduct demonstrations of the SR Hawk ground surveillance radar at Fort Benning, Georgia. Operation will be on 16.21-16.50 GHz.

• Laurel Technologies Partnership filed an application with exhibit for special temporary authority to test the operating capability of the Manportable Surveillance and Target Acquisition Radar (MSTAR) after its integration into a border and force protection ground surveillance system. The system is comprised of a trailer-mounted telescoping mast that supports a sensor package. That package includes the MSTAR radar and two video cameras (for day and night). The experiment will test and evaluate target detection and tracking capabilities of the radar and visual capabilities of the cameras once a target is acquired. Testing will be on 16.75-17.25 GHz in the Largo, Florida area.

• Samsung filed an application for special temporary authority to conduct sounding and propagation measurements on 28 GHz in Richardson, Texas. Samsung wants to better understand the outdoor mobile environment and impacts to path loss, angular spread, delay spread, non-line-of-sight beamforming, and blocking issues.

The reports seem to have been triggered by a February 14 Stanford News Service release. For those wanting to go beyond the headlines, the researchers have a web site and make available a technical paper that was presented, along with a demonstration, at Mobicom 2010 in September. On its face, this system seems to halve the spectrum needed for a two-way system, but it’s not that simple. Furthermore, for reasons you’ll see below, this doesn’t seem to be a mobile solution. The researchers are coming  from the perspective of improving the performance of WLANs, and the paper is more clear when read from that view. Still, no matter what radio system you work with, full-duplex on the same frequency makes you think. I’ve read the paper and have pulled out what I think are the essential points.

The custom has been to not transmit and receive on the same frequency at the same time because it doesn’t work; the receiver is overwhelmed by interference. Interference cancellation techniques that can help, but not enough. To reduce interference to the point where the receiver can detect the desired signal, we get to the novel aspect of this system. The transceiver uses three antennas, two for transmit and one for receive. Power is split between the two transmit antennas. The transmit antennas are placed such that one is one-half wavelength apart from the other, with respect to the receive antenna. The transmitted signals thus arrive at the receive antenna 180 degrees out of phase and cancel, mostly, in a process the researchers call antenna cancellation. After that, RF and baseband interference cancellation reduces remaining interference to the point where the desired signal can be detected.

If that’s too opaque, think of noise-cancelling headphones.

The system, as implemented, has several practical limitations:

• The two transmit antennas produce a pattern, in the horizontal plane, that varies according to their placement and how they are fed in amplitude and phase. This produces a null (low or no signal) where the receive antenna can be placed, but it also produces undesired nulls where one wants coverage. Adjusting the antennas’ power ratio can fill those nulls to some extent.
• Null position is sensitive to slight differences in transmit antenna power ratios. If the null moves too much, interference returns.
• Null position is sensitive to slight differences in antenna placement. At the frequency used for testing (2.48 GHz), if an antenna moves too much — on the order of 1 millimeter — interference can return.
• The bandwidth is narrow (5 MHz at 2.48 GHz); if the signal is too wide, the outer edges don’t get canceled and there’s interference.
• The requirement that the transmit antennas be at least one-half wavelength apart means that lower frequencies become awkward to work with. At 2.48 GHz, one-half wavelength is 5 inches. At, say, 700 MHz, it’s 17 inches.

On the plus side, the researchers say this system can alleviate several wireless networking bottlenecks, albeit with reworking of WLAN MAC layers to allow full duplex (which they’re working on).

• With no time-division, the hidden node problem is reduced since the access point can respond without delay to the first transmitting node. Other nodes hear that response and delay their transmissions, reducing collisions.
• Full-duplex reduces loss of network throughput cause by congestion and MAC scheduling since congested nodes can send and receive packets at the same time.
• Delay in multihop networks is reduced because a node can start forwarding a packet as it receives it, instead of using typical store-and-forward techniques.

They also point to a potential application in cognitive radio; a secondary user, while transmitting, could monitor for the primary user. In addition, the ability to have a control channel in-band and in real-time raises the prospect of improving the performance of some systems.

The full-duplex prototype, made with off-the-shelf parts and incorporating the IEEE 802.15.4 modulation/demodulation scheme, achieves performance within 8% of an ideal system. Some of this shortfall is caused by granularity of the test setup, such as using attenuators with larger-than-desired steps. The researchers are considering applying the technology to IEEE 802.11 radios; that’s a challenge because both power and bandwidth are larger (more interference to be suppressed).

The system seems to perform best with single propagation paths. In the presence of multipath, I’d expect a reduction in performance due to fading; the researchers report multipath was not a “dominant component” in their tests, which were done indoors with pretty good results. I’d like to see simulated or measured performance under a few different multipath conditions.

We handle multipath on WLANs well today through the use of multiple-input and multiple-output (MIMO) antennas. With sufficient multipath, and a sufficient number of antennas, spectrum capacity can be doubled, or more. But MIMO in the WLAN context doesn’t permit full duplex, and thus doesn’t permit the networking fixes that this system does, and those improvements are expected to be a significant source of gain. Furthermore, MIMO is designed to take advantage of multipath; its gain isn’t that great where multipath is low, such as on some outdoor links.

The tradeoffs of this system when comparing it to others are gains from reduced spectrum requirements, losses from lack of MIMO, and gains from relieving the hidden node problem, reducing network congestion, and reducing end-to-end network delay. The researchers suggest the biggest benefits are to come from reducing network bottlenecks; they downplay physical layer gains.

We’ll follow this. Reading about it reminds me of sitting in a wireless standards meeting in the mid 1990’s and hearing about Turbo Codes, a coding scheme that doubles data rates with no increase in transmitted power, and that is in widespread use today. That concept also came out of the blue. Many were skeptical, but it worked. As with this radio system, Turbo Codes were made from existing elements put together a different way. Sometimes that’s all it takes.

(Disclosure: According to the paper’s acknowledgments, this research is supported in part through a gift from DOCOMO Capital, a subsidiary of NTT DOCOMO, which is a client.)

First, note that the FCC’s NPRM on changing the experimental licensing rules was published in the Federal Register on February 8. That means the comment deadlines are set. Comments are due March 10, and Reply Comments are due April 11. Consider filing comments in support of relaxed rules for industry as well as for academia. A few good comments have been filed already.  I point to the comments of Hans Schantz as exemplary.

On to the applications, which I list in order of frequency:

• BAE Systems Information and Electronic Systems Integration Inc. filed an application (with supporting exhibit) for special temporary authority to operate in Wayne, New Jersey on several frequency bands between 27 and 2003 MHz. This is to support development of a more cost-efficient and robust Ground Mobile Radio system for the Army.

• Raytheon Missile Systems filed an application (with supporting exhibit) for special temporary authority to conduct propagation tests in Tucson, Arizona on the following frequencies: 86, 87.5, 87.7, and 87.9 MHz (in the broadcast band). This is to aid in the development of transmission systems on those frequencies. (For a missile company, an unusual band in which to conduct experiments.)

• Michigan Technological University Aerospace Enterprise filed an application (with supporting exhibit) for experimental license to operate on 145.97, 435.52, and 2400.0-2483.5 MHz to support the Oculus-ASR satellite project. The frequencies are for downlink control at 1200 bps, uplink control at 1200 bps, and downlink image data at 230 kbps, respectively. “Oculus-ASR is a nanosatellite currently being developed to aid in the advancement of U.S. Space Situational Awareness as part of the University Nanosatellite Program. The program gives students the opportunity to work with industry sponsors in an effort to construct the best nanosatellite in a nationwide competition, hosted by the Air Force Research Laboratory (AFRL).”

• Carlson Wireless Technologies filed an application (with supporting exhibit) for special temporary authority to test a TV white space system using a TV broadcaster’s tower. The intent is to show how white space and broadcasting radios can coexist without objectionable interference. Operation is requested on 174-216 MHz (TV channels 7-13) in Oklahoma City, Oklahoma.

• Harris filed an application (with supporting exhibits) for special temporary authority to conduct field testing of software-defined radio (SDR) equipment in Melbourne, Florida on 232.375, 300.375, and 362.250 MHz. The testing will verify line-of-sight communication capabilities of radios ultimately deployed by the military abroad. This testing precedes more stressful at Army test ranges.

• BAE Systems Unmanned Aircraft Programs Inc. filed an application (with supporting exhibit) for experimental license to develop radio link equipment used in the unmanned aircraft systems operated by military branches for command, control, communications, computers, intelligence, surveillance, and reconnaissance  (C4ISR) applications. More specifically, the testing will involve the testing of a Microhard Systems model MHX320 wireless modem at BAE Systems’ factory in Tucson, Arizona. The MHX320 is a 310 to 390 MHz frequency hopping modem, which can be optimized for long distance communications of over 60 miles with throughput up to 230 kbps. Testing will be on 310.0-328.6 and 335.4-390.0 MHz.

• Raytheon Network Centric Systems filed an application (with supporting exhibit) for special temporary authority to test its Aurora and Wireless IP-capable Network (WIPN) radios, which provide a Mobile Adhoc Network (MANET) data network capability able to provide effective throughput up to 11 Mbps. Operation will be on 420-450 MHz in Fort Wayne, Indiana. This may be related to DARPA’s Mobile Ad-Hoc Interoperable Network GATEway (MAINGATE) program, which was initiated to develop systems required to enable network-centric warfare among Coalition and U.S. Forces, as well as to facilitate military operations with non-governmental organizations (NGOs) and first responders.

• Stark Aerospace filed an application (with supporting exhibits) for experimental license to test a remotely piloted aircraft for public safety and military applications.  Communications from ground to aircraft is by two uplink modes; a primary mode and a backup mode. The primary mode uses the bands 4500-4800 and 4940-4990 MHz. The backup uses the 465-510 MHz band. No information on the downlink is found.

• 4 Tech Media filed an application (with supporting exhibits) for experimental license to conduct white spaces experiments in Washington DC. This work is to be done jointly with District of Columbia government and the Community College of the District of Columbia, and is to investigate the usefulness of available white space spectrum for use in home networking applications.  The network is to consist of 5 base stations and 1,200 access points.  Although the request is for frequencies that span the entire UHF portion (470-698 MHz) of the white space band, only channels permitted for use by FCC rules are to be used. From the exhibits, it appears this experiment is supported by about $30 million of government grants, most by way of the American Recovery and Reinvestment Act.

• Motorola Solutions filed an application (with associated exhibit) for special temporary authority to operate in the 758-768 and 788-798 MHz bands to conduct tests in connection with the development of Long Term Evolution (LTE) broadband equipment. The testing will be conducted from up to three sites near the offices of Motorola Solutions in Schaumburg, Illinois. The requested frequencies encompass both the 758-763 and 788-793 MHz bands known as the upper 700 MHz D block, which has not yet been licensed for regular operation, and the 763-768 and 793-798 MHz public safety block licensed on a nationwide basis to the Public Safety Spectrum Trust.

• Florida Atlantic University filed an application (with supporting exhibits) for experimental license to operate on 824-849, 880-915, and 1850-1910 MHz in and around Boca Raton, Florida. The intent is to support lab exercises in the College of Engineering and Computer Science. Equipment to be used includes a GSM and a CDMA base station, operating at up to 100 watts effective radiated power. The University says it will coordinate with other licensees, which would include cellular and PCS operators.

• BAE Systems Information and Electronic Systems Integration Inc. filed an application (with supporting exhibit) for special temporary authority to conduct in-flight calibration and verification of a radio direction finding system on an unmanned aircraft at Victorville, California. Several frequency bands will be used between 880 MHz and 15.35 GHz. This test supports the company’s work for the US Air Force and DARPA.

• The University of California, Berkley, Computer Science Department filed an application for special temporary authority to operate in support of OpenBTS technology investigations. Testing would be on 890-915 and 935-960 MHz.

• DRS ICAS, LLC filed an application (with supporting exhibit) for special temporary authority to test Identification Friend or Foe (IFF) interrogator equipment that is being developed under a contract with the Italian Air Force. Operation will be on 1030 and 1090 MHz at Cheektowaga, New York.

• Lockheed-Martin filed an application (with supporting exhibits) for special temporary authority to test IFF systems part of a sale to the Royal Saudi Air Force. The system uses the TPS-77 transportable radar platform. Operation will be on 1030 MHz.

• Qualcomm filed an application (with supporting exhibit) for experimental license to operate on Cambridge, Massachusetts on 1915-1920 MHz.    Qualcomm is collaborating with faculty and students at MIT to further its testing, validation and application concepts around a peer-to-peer system currently under development. It appears to allow peer-to-peer communications over licensed spectrum without infrastructure support. Qualcomm says the primary objective is to explore creative application ideas which are enabled by this technology, validate system performance, and get feedback on the networking architecture from those studying the subject at MIT. There has been some press attention of this technology at this writing. For better information, a Qualcomm acquaintance has pointed me to this presentation and to this IEEE magazine article.

• Boeing filed an application (with supporting exhibits) for special temporary authority to operate on 2345‐2390 MHz in air-to-ground mode at three locations in Delaware, New Jersey, and Texas.  No further details are publicly available due to a confidentiality request; flight test telemetry is a likely purpose. The Navy is not enthusiastic about the proposal, and the application has yet to be granted.

• Sportvision filed an application (with supporting exhibit) for special temporary authority to operate an auto race track wireless data system that would allow television viewers to see, displayed on-screen, the real-time location of cars during a racing event. Vehicles equipped with GPS receivers and radios would provide updates every 200 milliseconds. Operation will be on 2395-2400 MHz at 23 motor speedways across the US. Modified Wi-Fi hardware will be used. The requested frequency band is just below the 2 GHz ISM band (high noise levels preclude operation there) and is allocated to the Amateur Radio Service. No interference is expected due to the short duration of operation and low power involved (1 watt). Operation will be coordinated with the ARRL.

• Florida International University filed an application (with supporting exhibits) for experimental license to operate a WiMAX base station on 2590 MHz in Miami, Florida in support of the Global Environment for Network Innovations (GENI) project.

• 4-D Security Solutions filed an application (with supporting exhibit) for experimental license to test surveillance radar on 8.75-8.95 and 10.32-10.48 GHz at locations in New Jersey and Wisconsin. The radars to be tested are Elta Systems models EL/M-2105 and EL/M-2129. This testing is in support of the company’s development of homeland security systems intended to provide protection for sensitive installations, borders, and coastlines.

• Denso Corporation filed an application (with supporting exhibits) for experimental license to operate nationwide on 24.125 and 25.5 GHz. Due to a confidentiality request, details of the experimental plan are not publicly available. This experiment is likely related to Denso’s ongoing work developing vehicle radar systems to detect preceding vehicles and obstacles as input to anti-crash and pre-crash systems.

• Battelle filed an application (with supporting exhibit) for special temporary authority to operate an experimental point-to-point communications link operating at millimeter-wave frequencies. The link uses optical components to generate and modulate the signals, and has the capability of transmitting 10 Gbps on a 100 GHz carrier. Operation will be at three locations on 95-105 GHz. The proposed study includes investigation of candidate modulation formats at distances up to 1 km.

• ShawnTech Communications filed an experimental application about which nothing is known due to a request for confidentiality. ShawnTech provides phone and related services to the corrections industry. This may be an experiment of cell phone jamming or managed access technology to address contraband wireless devices.

• National Public Radio filed an application (with supporting exhibits) for an experimental license to operate on 87.7 MHz in Philadelphia and San Francisco to test a “cognitive modulator” that would operate below the current FM band as an alternative to current consumer FM modulators. These modulators plug into the earphone jack of an audio device and transmit the audio at low power to an FM radio, often in a car.

The performance of these devices is usually mediocre at best. The FCC limits them to very low power. They’re tuned initially to unused FM frequencies that become occupied as the car moves, causing interference. HD Radio, which overlays a digital signal on the analog channel, increases interference; furthermore, HD Radio interference has no audible content and, to the listener, appears to be an unused channel causing confusion when selecting a frequency for the modulator. The modulators can also cause interference to other FM listeners.

The cognitive modulator to be tested would operate on 87.7 MHz, just below the FM band. It would measure interference and noise and adjust its transmitter power to provide a desired signal quality in car’s FM radio. In addition to testing the effectiveness of the new modulator, any interference from the modulator to other services would be evaluated. Services that could be impacted (but probably won’t) include FM broadcast stations on 88.1 MHz and digital TV stations on Channel 6 (82-88 MHz). Presumably, successful test results would be used in support of a request to the FCC to allow the manufacture and sale of the devices.

• Lilee Systems filed an application (with supporting exhibits) for experimental license to support the development of radio systems for Positive Train Control (PTC). PTC is mandated by the Rail Safety Improvement Act of 2008 with regulation administered by the Federal Railway Administration. It’s intended to prevent train-to-train collisions, enforce speed restrictions, and temporarily slow trains near construction zones, among other things. Lilee is developing a radio product family to support PTC; specifically, it intends to provide software and hardware for radios in base stations, in locomotives, and at waysides. Testing is to be done in the Santa Clara, California area on 217-222 MHz.

• Adaptrum filed an application (with supporting exhibit) for special temporary authority to demonstrate a TV white space device at the FCC. The frequencies requested are 512-518, 542-548, 626-632, and 644-656 MHz (TV channels 21, 26, 40, 43, and 44, respectively).

• Syniverse Technologies filed an application for special temporary authority to operate a low-power GSM base station on 1900 MHz in Tampa, Florida to test wireless roaming solutions and fraud services associated with GSM SIM cards.

• Western DataCom filed an application (with supporting exhibits) for special temporary authority to operate a UMTS base station from an aerostat in the vicinity of South Boston, Virginia on 1972.5 and 2162.5 MHz. Testing will include evaluation of communications range and data throughput.

• AKELA Inc. filed an application (with supporting exhibit) for experimental license to test a through-the-wall surveillance radar prototype in Santa Barbara, California. AKELA says the technology was originally developed for the military and is now being modified for state and local first responders. The final version of the device is expected to allow identification and location of movement within a structure from “a few tens of meters away.” The prototype operates as a frequency-stepping radar from 2900 to 3600 MHz. The current design uses a stepping interval of 3 MHz, with a dwell time on each frequency of 65 microseconds; these parameters will be varied as part of the test.

• Comtech Systems filed an application (with supporting exhibit) for special temporary authority to test a transportable angle-diversity troposcatter antenna on 4400, 4700, and 4935 MHz. The testing is part of fulfilling a contract for delivering these systems to the US Marine Corp.  Troposcatter antenna systems are generally set up for diversity operation using two reflectors; a feature of this antenna is that diversity is implemented in the feed system, so only one reflector is needed.

• Raytheon Missile Systems filed an application (with supporting exhibit) for experimental license to test missile flight test telemetry systems that operate on C-band aeronautical telemetry frequencies that were allocated at the 2007 World Radio Conference (WRC). These include 4400-4940, 5091-5150, and 5925-6700 MHz, and supplement existing S-band frequencies at 2200-2290 and 2300-2390 MHz. Although the WRC spectrum allocation is not yet in effect in the US, it’s expected to be eventually, and Raytheon wants to start developing the new telemetry systems that will operate in those bands.

• LaPoint Blase Industries filed an application (with supporting exhibits) for experimental license to conduct tests using a portable Doppler weather radar system as part of a US Air Force contract. Operation will be on 9320-9370 MHz. The radar will be mounted on a truck that will be deployed at various urban locations in the US during times of severe weather.  The radar will be used to finely characterize severe weather events near the truck as part of an effort to improve urban weather prediction over a small scale.

• ITT Gilfillan filed an application (with supporting exhibits) for experimental license to test an Air-to-Air Radar Subsystem (AARSS) that is used as a collision sense-and-avoid radar for the Broad Area Maritime Surveillance (BAMS) unmanned aerial vehicle (UAV) platform. This is part of a project for the US Naval Air Systems Command.  The AARSS is said to deliver 9.4 miles range in 4 mm/hr rain. Operation is to be on 13.25-13.40 GHz in the vicinity of Van Nuys, California.

• KVH Industries filed an application (with supporting exhibits) for special temporary authority to test new terminals for use with its global maritime communications network. Operation will be on 14.0-14.5 GHz in the continental US and on surrounding waters. The tests will be used to evaluate, optimize and demonstrate return uplink performance including for web access, e-mail, and voice. The terminal supports uplink data rates of up to 512 kbps and downlink end-user rates of up to 2 Mbps. It has a parabolic reflector 14.6 inches in diameter, and uses tracking mechanisms to keep it oriented toward the satellite. The market for this terminal includes small and medium-size vessels over 40-feet in length, including from the private, commercial, public safety, and defense sectors.

• Raysat Antenna Systems filed an application (with supporting exhibits) for special temporary authority to operate on 14.0-14.5 GHz in the continental United States. Technical details are not disclosed by the FCC due to a confidentiality request by Raysat. This is likely a test of a two-way mobile antenna for fixed satellite use.

• The University of Texas at Austin filed an application (with supporting exhibits) for experimental license to conduct tests of millimeter-wave propagation at 35-41 GHz and 57-63 GHz. The data collected are to be processed and integrated into published channel models to assist other researchers and designers.

• SET Corporation, a subsidiary of SAIC, filed an application (with supporting exhibits) for special temporary authority to operate on 93.5 GHz in and around Manassas, Virginia. This is to support manufacture of “multi-sensor products designed to counter the growing number of deadly security threats faced by homeland security and defense customers.” Further specifics are not disclosed by the FCC due to a confidentiality request by SET.

• Lockheed Martin filed an application (with associated exhibits) for experimental license to operate on 76, 78, 4590, and 4640 MHz in Orlando, Florida to demonstrate and collect operational information from voice and data communication links between a fixed ground station and a rotary-wing aircraft. Testing will use a Raytheon model RT-1808A transceiver for the lower frequencies, and an L3 Communications model 60057879+001 transmitter for the higher frequencies.

• Motorola filed an application (with supporting exhibit) for experimental license to test a prototype radio system designed to support the internal communications requirements, including those related to public safety, an electric power generation and transmission cooperative in Kentucky. Motorola wants to demonstrate the functionality and capability of the system, determine user acceptability, and get feedback for improvement. Operation will be on 151.4725-154.5675 MHz and 157.1875-162.9625 MHz in 26 locations.

• Carson Wireless filed an application (with associated exhibits) to conduct testing of TV white space devices on 174-216 and 470-698 MHz at Klamath, California. Equipment to be used is manufactured by Koos Technical Services and includes a base stations connected to the internet. The base stations provide 3 Mbps connections (using FSK modulation) to fixed client devices. One goal is demonstrate a practical solution for providing broadband connectivity in a rural community, including in challenging terrain. Applications for utilities are to be tested as part of the experiment.

• Telephonics Corporation filed an application (with associated exhibit) for experimental license to operate on 200-400 MHz at Farmingdale, New York. The company has an existing product, the TruLink Wireless Intercommunication System, that operates in the 2.4 GHz ISM band and is currently used by US Armed Forces. The experimental operation is to support a redevelopment of the product for use on the Armed Forces’ “preferred” band. The FCC has instructed the applicant to coordinate frequency use with the FAA which operates on 328.6-335.4 MHz, and with NTIA’s Military Assignment Group as the bands 225-328.6 MHz and 335.4-399.9 MHz are used for military purposes.

• NIITEK filed an application (with accompanying exhibits) for special temporary authority to operate on 200-7000 MHz to develop a ground-penetrating radar (GPR) that uses ultra-wideband (UWB) technology. The GPR is a component of NIITEK’s landmine detection system designed to detect and locate various buried explosive devices, including mines and improvised explosive devices (IEDs). The system is for use by the US Army in the Middle East.

• Microsoft filed an application (with associated exhibits) for experimental license to conduct testing of TV white-space fixed devices on 470-698 MHz. The system will consist of one base station and five access points operating at 10 Mbps using OFDM modulation. One goal is to show how TV white-spaces equipment provides broadband coverage and connectivity within a home or neighborhood network, even in non-line-of-sight environments. Applications for utilities will be part of the test.

• Qualcomm filed an application for special temporary authority to test UMTS technology in Manhattan on three frequency bands: 722-728, 1720-1730, and 2120-2130 MHz.

• Wireless Seismic filed an application (with associated exhibit) for experimental license to operate on 2400.0-2483.5 MHz in all 50 states. The company is a provider of seismic data acquisition systems, and is finalizing development of a new wireless networking product that will connect geophones used to record acoustic reflections off underground layers. (Those reflections are used to determine the presence of oil and natural gas fields.) The equipment replaces that using wired connections. The system will soon be sent for equipment authorization, and before that the applicant wants to test it in typical deployments to confirm its operational capability.

• Raysat Antenna Systems filed an application (with associated exhibit) for experimental license to test up to five Land Mobile Satellite Service (LMSS) earth stations in the 11.7-12.2 and 14.0-14.5 GHz bands. (There is a discrepancy between the frequencies listed on the application form and in the exhibit.) The earth stations are to communicate with the AMC-5 and AMC-6 satellites at 79° W.L. and 72° W.L., respectively. The satellites will also communicate with the Spacenet hub earth station in McLean, Virginia. This testing is in in connection with a Department of Defense/Logistics Innovation Agency satellite communications program contract. Part of the test is the applicant’s SR-70 antenna for mobile applications, featuring a 6 inch-by-6 inch antenna panel array capable of simultaneous transmission and reception within the 11.7-12.7 and 14.0-14.5 GHz bands. The antenna allows tracking in three axes: azimuth, elevation and polarization.

• Ingegneria Dei Sistemi filed an application for special temporary authority to operate on 17.1-17.3 GHz at Bingham Canyon, Utah. The company has developed a system, based on microwave interferometry, for monitoring displacement of land and structures, and wants to demonstrate land-slope-stability monitoring at an open-pit mine. The demonstration is to show that the system can monitor land movement as slow as a few millimeters per month.

• In connection with a US Army contract, Battelle filed an application (with associated exhibits) for experimental license to test a millimeter-wave communications system at 95-105 GHz having a data rate of 10 Gbps. Testing was to have been done at several locations in Ohio. The FCC dismissed this application, however, due to “potential harmful interference to Federal Government operations.”