Coordination Agmt SES

0100-EX-ML-2008 Post Grant Documents

HNS License Sub, LLC

2008-09-26ELS_93584

13706 2008 18113 FAX MILESTONE HOTEL ~Goor fpmmmmmmmmmmmens SESAAMERICOM An SES GLOBAL Company June 6, 2008 Federal Communications Commission Internationsgl Buresau 445 12th Street, S.W;. Washington, D.C. 20554 Re: Engineering Cortification ofSES Americom, Inc. To Whom It May Concern: This letter certifies that SES Americom, Inc. ("SES Araericom") is aware that Row 44, Inc. ("Row 44") is seeking a blanket authonzation from the Federal Commaunications Commissiton ("FCC") for authority to operate, on a non—conforming, non—harmful—interference basis, transmit/receive anterinas for aeronautical mobile— satellite services ("AMSS") using fixed—satellite service ("FSS") frequencies pursuant to ITU RR 5.504A. Row 44 is seeking an FCC suthorization to utilize SES Americom satellites AMC—2 at 101° W.L, and AMC—9 at §3° W.L., each licensed by the FCC. SES Americom understands that Row 44‘stransmit/receive antenna is an AMSS steerable antenna manufactuired by Aerosat Corporation designed to provide bi— directional broadband services to aircraft in flight. It supports reception and transmission in the 11.7—12.2 GKHz /14.0—14.5 GHz band respectively, with independent linear polarized array antermas to and from a geostationary satellite in space. The antenna is a 64—element phased array that is 7" in heightwith an antenna face that is 24.375". The antenna operates under girabaled motor control to orient the antenna in azimuth, :elevation and polarization and achieves a + 0.2 degree pointing accuracy during active tracking ofthe intended satellite. The antenna complies with Section 25.209 ofthe FCC‘s Rules with respect to gain specificationsin the co—polarization plane ofthe geostationary satellite orbit and off—axis cross polarization, providedthe:skew angle (i.c., the angle between the antenna azimuth plane and the direction along the GSO at the ' correspondingsatellite location) does not exceed 25°. The actual skew angle is constantly monitored bythe antenna control system and the aircraft transmitter will be muted in the event that this skew angle is exceeded. When communicating with either AMC—2 or AMC—9satellites, Row 44 will operate its antenna within the 14.0—14.5 GHz FSS uplink band and the 11.7—12.2 GHz FSS downlink band with a maximum equivalent isotropically radiated power (EIRP) of 40.6 dBW. At the maximum power the associated power spectral density at the antenna flange is —14 dBW/4kHz and is compliant with FCC rules.

13/06 2008 18:13 FAX MILESTONE HOTEL ‘ @002 FCC Interpational Bureau June 12, 2008 Page 2 of 3 SES Americom further accéepts that the forward dowalink (hub‘ to AES) maximum EIRP density is 13 dBW/4 kHz, which is above the 10 dBW/4 kHz specified in Section 25.134(g)(2) of the FCC‘s rules. Row 44 will maintain the forward downlink ERP density andthe off—axis EIRP spectral density by tight control of system operation that includes: 1) tnaintaining tms pointing error to be <0—2 degrees, relative to the intended satellite; 2) fault cletecnon that terminates transxmssmns Wwhen out oftolerance conditions (including the antenna pointing error) are detected; and 3) contitiuous monitoring/oversight by ground network operat(ons cepter (NOC). SES Americom acknowledges that the use of the above referenced transmit/recceive antenna by Row 44, installed and operated in accordance with the above conditions, is within the levels coordinated with the adjacent sateilite operators and should not cause unacceptable interfereniceinto adjacent satellites operating in accordance with FCC‘s two—degree spacing policy. SES Americom itself operates three satellites with Ku—band capacity within six degrees ofAMC—9 (AMC—5 at. 79° W.L,, AMC—16 at 85° W.L. and AMC—3 at 87° W.L) and two satellites with Ku—band capacity within six degrees ofAMC.—2 (AMC—1 at 103° W.L. and AMC—15 at 105° W.L.). Ifthe FCC authorizes the operations proposed by Row 44 in its application, SES Americom will include the antenna, as described above, to all future satellite network coordinations with other adjacent satellite operators. Row 44 shall corply with all such coordination agreements reached by the satellite operators. In orderto prevent unacceptable interference into adjacent satellites, SES Americom has beeninformed, and Row 44 acknowledges, that the antennas will be installed and operated in accordance with the above conditions and/or any other operationsal requirements specified in the FCC license ultimately granted to Row 44. Moreover, Row 44 agrees that it will accept interference from adjacent satellites to the — degree to which harmful interference would not be expected to be caused to an earth station employing an antenna conforming in all respects to the reference patterns defined in Section 25,209 ofthe FCC‘3 rules. Ifthe use of this anternnashould cause unacceptable \ The hub stations being used for this service are ticensed to HNS License Sub LLC vunder Call Signs £E0O0OO16§ and E940460.

HNS is working with Row 44, Inc. to test remote aeronautical Earth station equipment operating in conjunction with a Hub antenna (Call Sign E940460 in North Las Vegas, Nevada) licensed to HNS.


Document Created: 2008-09-25 22:04:31
Document Modified: 2008-09-25 22:04:31
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