Experimental Program Description

0451-EX-ST-2018 Text Documents

Viasat, Inc.

2018-03-09ELS_206212

Exhibit A Description of Request for Special Temporary Experimental Authority As an antenna manufacturer, Viasat, Inc. (“Viasat”) designs and produces a variety of fixed and aeronautical antennas supporting a wide variety of frequencies for both commercial and Government users. Viasat requests special temporary experimental authority to conduct performance testing on its next generation dual band mobile antenna, KuKarray Gen 2, in the 30.0 – 31.0 GHz band. The first generation KuKarray, whose Ka aperture is the M40, has already been granted blanket authority 1 by the Commission to operate on Viasat satellites and experimental authority to operate on Viasat and other satellites. 2 Details of Testing The performance testing will be over the air using Inmarsat’s I5-F2 and F3 satellites located at 55° W.L. and 180° W.L., respectively. Testing will take place in 4 locations with the satellite beam centered on the test location. Although the antenna to be tested is intended for aeronautical applications this testing will operate as a fixed antenna and not be mobile either in the air or on the ground. 1. Greenville, Texas (33°7’0” N , 96°8’0” W) a. Elevation (55° W.L. orbital location): 31.8° b. Azimuth (55° W.L. orbital location): 122° 2. Carlsbad, California (33°7’0” N , 117°16’0” W) a. Elevation (55° W.L. orbital location):14.5° b. Azimuth (55° W.L. orbital location): 106° c. Elevation (180° W.L. orbital location):14.1° d. Azimuth (180° W.L. orbital location): 254° 3. Duluth, Georgia (33°57’44” N , 84°05’49” W) a. Elevation (55° W.L. orbital location): 39.8° b. Azimuth (55° W.L. orbital location): 135.1° 4. Germantown, Maryland (39°11’44” N , 77°15’27” W) a. Elevation (55° W.L. orbital location): 39.1° b. Azimuth (55° W.L. orbital location): 147.1° The tables below shows the emission designators, frequencies and power levels requested for this testing. 1 See Viasat, Inc., File No. SES-LIC-20120427-00404, Call Sign E120075 (granted July 17, 2013). 2 See Viasat, Inc. File No. 0015-EX-CM-2018, Call Sign WH2XTJ (granted February 26, 2018).

Uplink Testing Parameters Uplink Carrier Uplink EIRP Test Emissions Uplink Uplink EIRP Center Frequency Density at bore- Case Designators Polarization (dBW) (MHz) sight (dBW/Hz) 4 30350 50M6M1D RHCP 49.0 -28.0 5 30350 10M1M1D RHCP 49.0 -21.0 6 30325, 30375 10M1M1D RHCP 49.0 -21.0 Downlink Testing Parameters Downlink Carrier Emissions Downlink Downlink EIRP Downlink ESD Test Case Center Frequency Designators Polarization (dBW) (dBW/Hz) (MHz) 1 20550 70M1M1D LHCP 57.6 -20.85 2 20550 22M5M1D LHCP 57.6 -15.92 3 20525, 20575 22M5M1D LHCP 53.6 -19.92 The figures below show the measured transmit gain plots for co-pol, and cross-pol in the azimuth and elevation planes at a skew angle of 55° and include radome in the measurement.

KuKa2 TX RHCP Ka Band Co—Pol Skew Angle — 55° (wide angle) Gain (dBic) ——AZ Plane — 31.0 GHz —— EL Plane — 31.0 GHz —180.0 —140.0 —100.0 —60.0 —20.0 20.0 60.0 100.0 140.0 180.0 Angle (°) KuKa2 TX RHCP Ka Band Co—Pol Skew Angle — 55° (narrow view) Gain (aBic) ——AZ Plane — 31.0 GHz —— EL Plane — 31.0 GHz 4.0 3.0 2.0 —1.0 0.0 1.0 2.0 3.0 4.0 Angle (°)

The complete details of the testing at each site have been submitted to MILDEP SMO and prior coordination with AFSMO has been initiated. Please contact Jimmy Nguyen (Jimmy.Nguyen@us.af.mil) for coordination of this test and use of the requested spectrum. Stop Buzzer for Operation: Program Manager: Mike Mester (phone: 760-893-1980; mobile phone: 760-585-5076) Systems Engineer: Alton Earle (phone: 678-924-2653; mobile phone: 678-409-4356) Robert Ruggieri (mobile phone: 301-266-0924) or Boeing 24-hour NOC hotline: 855-556-1001 and email: bcssnoc@boeing.com


Document Created: 2018-03-09 15:33:43
Document Modified: 2018-03-09 15:33:43
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