Exhibit

0043-EX-ST-2016 Text Documents

Raytheon IDS

2016-01-12ELS_171344

Raytheon Request for Special Temporary Authorization STA File Number: 0043-EX-ST-2016 1/12/2016 Purpose of Operation: Frequency authorization is being requested to test the performance of six commercial maritime radars. Radars of similar type will be tested together in two different groups; three large fixed site radars and three smaller shipboard radars. Technical Synopsis: - Spectrum requested: 9200 – 9500 MHz - Ten frequencies will be selected from the spectrum granted for each test group - Power levels requested: 770 kW ERP - Expected time of use: Between 0000 and 2400, 12-16 hours/day - Stop buzzer contact: Peter Scarlett (Cell: 519-572-4394) STA Explanation: The Special Temporary Authorization is required to quantify the performance of the radars under test in a short time frame in order to meet contractual obligations. This testing will take place as early as 2/4/2016. Radar Mounting and Direction of Operation: The radars will be operated from the parking lot of the Holiday Inn, Ponce, Puerto Rico for up to 10 days. They will be mounted on the roof of a small container or other temporary mounting structure at approximately 10 ft above ground level. The antennas are 8 - 21 foot long slotted waveguide with gains of 30 – 38 dBi, and will be mounted close to the roof surface. The radars rotate clockwise between 15 - 30 rpm and will only transmit towards the sea at azimuths between 180 and 270 degrees. Radars of similar type will be tested together in two different groups; three large fixed site radars and three smaller shipboard radars. Ten frequencies are required for each test group. RF Hazard Calculations and Site Safety Measures: Initial calculations show that power density will fall below general public exposure limits at less than 2.3 meters distance and occupational exposure limits at less than 1.1 meter, using formula (7) from FCC OET Bulletin 65 “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields”, dated August 1997. These calculations take into account the highest duty factor and the rotating antenna duty factor. A safety interlock disables the transmitters unless the antenna is rotating. The radars will be operated in a fenced guarded area at all times. Raytheon’s RF safety group is involved in all testing that requires free space radiation to ensure that no personnel are subjected to RF power density levels exceeding the Maximum Permissible Exposure (MPE) limits of the Part 1.1310 of the FCC Rules and the guidelines in FCC’s OET Bulletin Number 65. Raytheon Technical Point of Contact: Peter Scarlett Raytheon IDS Phone: 519-572-4394 Email: peter_scarlett@raytheon.com Raytheon Spectrum Manager filing application: Karen Dyberg Spectrum Management and RF Safety Phone: 508-490-2723 1

Cell: 508-450-9236 Email: karen.dyberg@raytheon.com Period of Use: Start date: 02/04/2016 End date: 07/28/2016 Radar info: Table 1 below contains the detailed equipment characteristics for each radar. Table 1 Detailed Equipment Characteristics Large Fixed Site Radars Smaller Ship Radars Manufacturer Terma GEM Kelvin Terma GEM Kelvin Hughes Hughes Model Scanter Sentinel 200 SharpEye Scanter Sea Eagle SharpEye 5202 SBS-900-2 6002 200 DTX-A40 # of units 1 1 1 1 1 1 Experimental N N N N N N RF output at transmitter 200 W peak 200 W peak 200 W peak 200 W peak 200 W peak 200 W peak ERP from antenna 770 kW 770 kW 344 kW 193 kW 154 kW 122 kW Frequency tolerance 0.001% 0.001% 0.001% 0.001% 0.001% 0.001% Revolutions per minute 15 15 15 20 20 20 Pulse durations 50 us 26 us 25 us 50 us 26 us 25 us 10 us 5 us 5 us 10 us 5 us 5 us 0.15 us 0.15 us 0.1 us 0.1 us 0.1 us 0.1 us Chirp bandw idth 32 MHz 32 MHz 20 MHz 32 MHz 32 MHz 20 MHz Ristime 0.1 us 0.1 us 0.1 us 0.1 us 0.1 us 0.1 us Necessary (20 dB) 64.8 65.1 41.1 64.8 65.1 41.1 bandw idth, MHz 65.8 66.5 42.5 65.8 66.5 42.5 78.6 78.6 57.9 81.9 81.9 57.9 Antenna Gain 38 dBi 38 dBi 34.5 dBi 32 dBi 31 dBi 30 dBi Antenna length 21 ft 21 ft 18 ft 12 ft 8 ft 8 ft Suggested frequencies, 9340 9330 9350 9260 9320 9230 MHz 9365 9450 9470 9301 9440 9470 9390 9342 9415 9383 9440 9424 9465 9465 PRF 2000 Hz 1500 Hz 2000 Hz 2000 Hz 1500 Hz 2000 Hz Duty factor 20% 20% 11.40% 20% 20% 11.40% Rotating duty factor 1% 0.10% 0.13% 0.19% 0.23% 0.28% Beam el ° 11 11 25 30 25 30 Beam az ° 0.36 0.36 0.45 0.7 0.85 1 2

List each type of emission separately: There are two Terma radars that require six frequencies each. The other four radars only require two frequencies each. Each radar test group requires a total of ten frequencies. Frequencies will be selected to prevent inter-radar interference. The radar’s operate similarly. Their transmit waveform is a fixed sequence of short, medium and long chirp pulses alternating between low- and high-band frequencies that are approximately 120 MHz apart. The pulse repetition frequency is either 1500 or 2000 Hz. All pulses have an FM chirp bandwidth of 32 MHz or 20 MHz with a 100 nsec rise-time and differ only in their pulse duration and necessary bandwidth as shown in Table 1 above. The emissions are Q3N. The spectrum required for each test group in the 9.2 – 9.5 GHz band is summarized in Table 2 below. Table 2 Spectrum Summary Large Fixed Site Radars Smaller Ship Radars ERP from antenna 770 kW 193 kW Frequency tolerance 0.001% 0.001% Necessary (20 dB) 65.1 65.1 bandw idth, MHz 66.5 66.5 78.6 81.9 Necessary bandwidth. Explain how determined. Using the necessary bandwidth formula for FM-pulsed radars from the NTIA Manual, with a 0.1 μsec rise time: Where t = Emitted pulse duration at 50% amplitude (voltage) points. The 100% amplitude point is the nominal peak level of the pulse. tr = Emitted pulse rise time in μsec from the 10% to the 90% amplitude points on the leading edge. Bc = Bandwidth of the frequency deviation (the total frequency shift during the pulse duration) in MHz Location: The radar will be located in the rear parking lot of the Holiday Inn, Ponce, Puerto Rico, within 150 meters of the coordinates below. The address is 3315 Ponce Bypass, Ponce, Puerto Rico, 00731. The coordinates of this address are: Latitude 17° 58' 42.2" N, Longitude 66° 40' 17.8" W. 3


Document Created: 2016-01-12 11:54:52
Document Modified: 2016-01-12 11:54:52
© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC