Atlas Harmon Guam UH

SUPPLEMENT submitted by ATLAS Space Operations, Inc

Guam UHF Coordination and Interference Analysis

2019-02-19

This document pretains to SES-LIC-20181224-03650 for License on a Satellite Earth Station filing.

IBFS_SESLIC2018122403650_1627486

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Atlas Space Operations Harmon, Guam UHF Satellite Earth Station Prepared By: Skjei Telecom, Inc. 7700 Leesburg Pike, Suite 238 Falls Church, VA 22043 February 19, 2019

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. EARTH STATION COORDINATION DATA .................................................................................................. 7 4. CERTIFICATION ........................................................................................................................................... 8 Frequency Coordination and Interference Analysis Report 2/19/2019 Page 2 of 8

1. CONCLUSIONS An interference study considering all existing, proposed and prior coordinated terrestrial facilities within the coordination contours of the proposed earth station demonstrates that this site will operate satisfactorily and without harmful interference to local in-band and adjacent band licensee. Operation in the spectrum identified will have no restrictions due to interference considerations. Frequency Coordination and Interference Analysis Report 2/19/2019 Page 3 of 8

2. SUMMARY OF RESULTS Using both the IBFS and ULS databases from the FCC, the license records for Guam for 400-402 MHz and 449-451 MHz were pulled. The IBFS database yielded one license for the 400-402 pull, a call sign of E160038 for applicant Spire Global, Inc. at a frequency of 402-403, however this license was pulled the next year, yielding it currently inactive. There was also one license that was also withdrawn at the 449-451 frequency for the same company (with same call sign as well), but that license was also withdrawn. The ULS database pull yielded two licenses, one of which was canceled for the applicant Sorensen Pacific Broadcasting, Inc. with the call sign of KPF271. The other license remains active until 2/1/2022 for the applicant Guam Educational Radio Foundation with the call sign KPN725 at the frequency 450.35 MHz. The contact information for the one active licensee, Guam Educational Radio Foundation was collected: Licensee Information: Guam Educational Radio Foundation Phone Number: 6717348930 Email: marketing.kprg@gmail.com Address: 303 University Drive UoG Station, Mangilao, GU, 96923 Website Contact Form: https://www.kprgfm.com/main/index.php?key=contact Site Information: Site Name: Mount Barrigada, Agana BAS Remote Pickup Site Call Sign: KPN725 Ground Elevation: 195 Latitude: 13.545 N Longitude: 144.9242 E Frequency: 450.35 MHz Power Output: 30 Power EIRP: 189.3 The local Society of Broadcast Engineers (SBE) Coordinator for Guam is Robert Kelley, at Guamtech, Ph. 671-648-4262, fax 202-318-2437, email rkelley@guamtech.com. A coordination request was initiated via email on November 27, 2018. This was followed up by another email on January 25th, 2019. Attempts at coordination via telephone were made on January 3rd and January 25th. No response was received. Frequency Coordination and Interference Analysis Report 2/19/2019 Page 4 of 8

Table 1 - Atlas Interference Calculations for Uplink at 450.2 MHz Victim Channel Freq. 450.35 MHz Victim BW 50 kHz Victim Start Freq 450.325 MHz Victim Stop Freq 450.375 MHz Atlas Channel Freq 450.2 MHz Atlas BW 30 kHz Atlas Start Freq 450.185 MHz Atlas Stop Freq 450.215 MHz Frequency Separation between Atlas Tx and Victim Rx 0.11 MHz Receiver Noise Level -136 dBW/MHz, from license Protection Criteria, I/N -6 dB, per ITU-R Protection Criteria -142 dBW Frequency of operation 450.2 MHz Wavelength 0.66591 meters Bandwidth 30 kHz RF Power 20 W Atlas Transmit Main Beam EIRP 29.01 dBW/30 kHz Path losses required to clear 171.010 dB Path Over-the-Horizon Clutter 20 Local above terrain blockage sources Tx Off-Axis Discrimination 1 dB Victim Receiver Off-axis Discrimination 1 dB, est Filter Selectivity of Tx and RX 72.01 43 +10*log(P), 250% Separation Path losses required to clear 77.0 dB km, in general unless collocated with Distance to Clear using local transmitter the remote pick-up receiver shielding, discrimination, filter should not experience any harmful response, and free space loss 0.4 interference Frequency Coordination and Interference Analysis Report 2/19/2019 Page 5 of 8

Figure 1 – Atlas E/S site and GERF Broadcast Auziliary Remote Pickup Fixed Site. Remote pickups within 19km of Fixed site. Frequency Coordination and Interference Analysis Report 2/19/2019 Page 6 of 8

3. EARTH STATION COORDINATION DATA This section presents the data pertinent to frequency coordination of the proposed earth station that was circulated to all carriers within its coordination contours. ATLAS Space Operations, Inc Licensee Name: Street: 10850 E Traverse Hwy, Ste 3355 City, Stat, Zip Traverse City, MI 49684 Contact Hanna Pritchard Phone Number: 231-598-6184 E-Mail: hpritchard@atlasground.com Site Name Harmon Latitude 13 ° 30 ' 48.8 " N Longitude 144 ° 49 ' 31.1 " E Site Elevation 72.02 meters Antenna Make M2 Antenna Systems Model 450CP34/400CP30 Gain (TX) 16.0 dBi at .450 Gain (RX) 16.2 dBi at .401 Carrier Frequency Span 450.185 450.215 Emission Designator 30K0F1D EIRP (dBW) 29 EIRP Density (dBW/4kHz) 20.3 Satellite BlackSky Global, NGSO Frequency Coordination and Interference Analysis Report 2/19/2019 Page 7 of 8

4. CERTIFICATION I HEREBY CERTIFY THAT I AM THE TECHNICALLY QUALIFIED PERSON RESPONSIBLE FOR THE PREPARATION OF THE FREQUENCY COORDINATION DATA CONTAINED IN THIS APPLICATION, THAT I AM FAMILIAR WITH PARTS 74, 90, AND 25 OF THE FCC RULES AND REGULATIONS, THAT I HAVE EITHER PREPARED OR REVIEWED THE FREQUENCY COORDINATION DATA SUBMITTED WITH THIS APPLICATION, AND THAT IT IS COMPLETE AND CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF. BY: Ken Ryan, P.E. Principal Engineer Skjei Telecom, Inc. 7700 Leesburg Pike, Suite 238 Falls Church, VA 22043 DATED: February 19, 2019 Frequency Coordination and Interference Analysis Report 2/19/2019 Page 8 of 8


Document Created: 2019-02-19 13:57:18
Document Modified: 2019-02-19 13:57:18
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