Attachment NRAO Letter

This document pretains to SES-LIC-20171227-01381 for License on a Satellite Earth Station filing.

IBFS_SESLIC2017122701381_1320358

December 22, 2017 Page 1 of 2 NRQZ ID: 11183_14NOV2017 FCC Regulatory Group Reference Copy / Approved with Special Conditions Wavestream Corporation 545 W. Terrace Drive San Dimas, CA 91773 Application Reason/Purpose Prior coordination notification File Number Shall be provided by applicant Applicant Name Addressee Call Sign Various Site Name or Loc Hot Springs, VA 38 01 59.7N, 79 46 46.5W* (Special Conditions) Monterey, VA 38 25 41.1N, 79 35 46.8W System Configuration See attached “Site Specific Data” See attached “Final Engineering” for Hot Springs Previous NRAO Coordination No. NRQZ ID None Listed Current NRAO Coordination No. NRQZ ID 11183_14NOV2017 Dear Applicant: The National Radio Quiet Zone (NRQZ) has evaluated these facilities to determine the interference impact on our highly sensitive radio astronomy operations. Special Condition: Hot Springs, VA The National Radio Astronomy Observatory (NRAO), Green Bank, WV, objects unless the Applicant's license is restricted to an Effective Radiated Power (ERP) of 7532 Watts per 308 kHz unit bandwidth at Azimuth 353.2 degrees True. To meet this Special Condition, the Applicant shall: 1. Use the final engineering submitted by Gary Edwards, Comsearch, indicating that all facilities meet the ERP restriction. 2. Arrange for a site inspection to verify the implementation of this Special Condition. 3. Post a copy of this document and associated attachments at the Transmit facility. Regulatory The NRQZ Office requests that: 1. The FCC places the Special Condition on the Station License. 2. This Letter of Concurrence be attached to the FCC application. 3. The applicant provides the NRQZ Office with notice of its official filing with the FCC per section 47CFR1.924 (a) (2).

December 22, 2017 Page 2 of 2 NRQZ ID: 11183_14NOV2017 Reference Copy / Approved with Special Conditions The National Radio Astronomy Observatory (NRAO) site located at Green Bank, Pocahontas County, WV, has no objection to this frequency assignment provided the special conditions are met. The Sugar Grove Research Station, the former Naval Radio Research Observatory (NRRO), located at Sugar Grove, Pendleton County, WV has no objections to this frequency assignment. This letter constitutes coordination of assignment in the National Radio Quiet Zone as required by the FCC Rules and Regulations 47CFR1.924. If I may be of assistance, please feel free to contact me. Sincerest regards, Paulette Woody Digitally signed by Paulette Woody Date: 2017.12.22 08:54:42 -05'00' Paulette W. Woody NRQZ Office Administrator PWW:pww cc: Gary Edwards, Comsearch file: 11183.docx Attachments: Final Engineering This concurrence remains valid provided the data contained within is consistent with the applicant’s filing at the Commission. Any discrepancy in system parameters, such as geographical coordinates (Latitude, Longitude, AMSL), antenna height above ground level (AGL), antenna gains or directivity (orientation), channel (operating frequency or frequency bands), emission type, and power requires re-coordination. If the Commission has questions regarding the validity of this or any concurrence, please direct inquiries to nrqz@nrao.edu or 304-456-2107.

Calculated Max ERPd per TX (W) prior to system loss Bandwidth BW (MHz) Mechanical-DT Max Freq High (MHz) Freq Low (MHz) Electrical-DT Max AZ ° True TX Lat N Lon W AGL NRQZ ID Gain Antenna Model MSL (m) Pwr NAD83 NAD83 (m) Reference Copy / Approved with Special Conditions (dBi) (W) 11183 Hot Springs 4 43.3 Skyware Global Type 123 52126.7 38 01 59.7 79 46 46.5 1032.23 2.74 14000 14500 0.308 149.7 to 252.7 degrees, EL 41.3-12.3 0 0 11183 Monterey 4 43.3 Skyware Global Type 123 52126.7 38 25 41.1 79 35 46.8 1117.81 2.74 14000 14500 0.308 150.2 to 252.7 degrees, EL 12.0-41.0 0 0 11183 Wavestream 12/22/2017 Site Specific Data 1 of 1

12/18/2017 DATE NRQZ# 11183 Hot Springs http://www.ngdc.noaa.gov/geomag-web/#declination Magnetic Declination Correction 8.95 ° West 8° 57' W ± 0° 21' changing by 0° 2' W per year Location: Hot Springs, VA Latitude: 38 01 59.7 (ddmmss.s) 298 Woodside Lane Longitude: 79 46 46.5 (ddmmss.s) Hot Springs, VA Ground Elev.: 1032.23 Meters 3386.5 Ft Antenna Ht.: 2.74 Meters 9.0 Ft Frequency: 14000 - 14500 MHz NRAO AERP (watts) 7532 watts at 353.2 ° True (Фd) Bandwidth 308 kHz watts at 353.2 ° True Diffraction watts at 353.2 ° True Reference Copy / Approved with Special Conditions Sector Name or Indicator 1 a. Antenna Type Skyware Global Skyware Global b. Maximum Antenna Gain 41.15 dBd 41.15 dBd c. Antenna Azimuth (° True or "omni") 149.7 °T to 252.7 °T to Antenna Azimuth (Mag) 158.7 °Mag 261.7 °Mag d. Az to GBT on Antenna Pattern 203.5 ° 100.5 ° e. Antenna Gain to GBT (b - │ f │) -7.91 dB -10.00 dB f. Antenna Gain to GBT Below Maximum -49.06 dB -51.15 dB g. Mechanical Downtilt (Фbt) 12.3 - 41.3 ° 12.3 - 41.3 ° h. Loss to GBT Due to Mechanical Downtilt dB dB i. Transmitter Output Power 4 watts 4 watts j. System Losses: Combiner/Duplexer dB dB Lightning Arrestor dB dB Main Line dB dB RF Filter dB dB Misc. connectors, etc. dB dB j. System Loss 0.00 dB 0.00 dB k. Power to Antenna (ix j) 4.00 watts 4.00 watts l. Main Beam Power (k x b) 52126.67 watts 52126.67 watts m. ERPd to GBT (l x (f + h)) or (I x (e - (h + j))) 0.65 watts 0.40 watts Power at output of duplexer 4.00 4.00 AZ bearing range 149.7° - 252.7 ° True B Өd Enter 1st Obstacle Information provided by NRQZ office A Өd = Angle to 1st Obstacle 24.2 km to 1st Obstacle A = Distance to 1st Obstacle in Feet 79396 3395.57 TX AMSL (ft) B = Ant Ht AMSL minus Ht of 1st Obs -734.1791339 4129.75 AMSL 1st Obstacle Өd = arctan(B/A) = -0.53 ° A -Өd value indicates that the first obstacle is above the horizon A +Өd value indicaes that the first obstacle is below the horizon Effective mechanical downtilt adjustment: Effective Elevation = Өd - Өbt cos(Фd - Фbt) = Effective Elevation Adjustment = Definitions: Фd = Azimuth to GBT Фbt = Azimuth of mechanical beam tilt (verticle) Өd = Elevation to 1st obstacle (negative above horizon) Өbt = Elevation of antenna mechanical beam tilt (neg. above horizon) Note: No adjustments for electrical beam tilt are required because the pattern data already accounts for this Effective azimuth on horizontal pattern = Фd - Antenna Azimuth (True) {If AZ<0, then add 360} Effective elevation on vertical pattern = Өd - Өbt cos(Фd - Фbt) {IF ELEV<0, then add 360} Antenna Gain = HPAT(Eff AZ) + VPAT(Eff ELEV) + Max Gain 11183 Wavestream Corporation Hot Springs 12/22/2017 FEW - Final Engineering Worksheet 1 of 1


Document Created: 2017-12-22 08:54:42
Document Modified: 2017-12-22 08:54:42
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