Attachment LTR

LTR

LETTER submitted by IB,FCC

LTR

2008-09-15

This document pretains to SAT-AMD-20071215-00176 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2007121500176_664462

Federal Communications Commission Washington, DC 20554 International Bureau September 15,2008 James M. Talens, Esq. Counsel for ATCONTACT COMMUNICATIONS, LLC 60 17 Woodley Road McLean, VA 22 101 Re: ATCONTACT COMMUNICATIONS, LLC Files Nos. SAT-MOD-20070924-00130, SAT-AMD-20071215- 00176; SAT-AMD-20080505-00100, SAT-AMD-20080505- 00096 (Call Sign S2680); and SAT-MOD-20070924-00132, SAT-AMD-20080505-00099 (Call Sign S2682). Dear Mr. Talens: This letter requests additional information concerning the above referenced applications filed by ATCONTACT COMMLTNICATIONS,LLC (ATCONTACT). In the applications, ATCONTACT seeks to make various technical changes to its licensed geostationary satellite orbit (GSO) space stations. In each application, ATCONTACT requests a waiver of Section 25.1 14(d)(3) of the Commission's rules, which requires each space station applicant to provide "predicted space station antenna gain contours for each transmit and receive beam requested."' In its applications, ATCONTACT states that each satellite will utilize 45 active receive and 45 active transmit beams, for a total of up to 180 beams. ATCONTACT included a total of four representative uplink and downlink beams in Schedule S of its application, maintaining that it would burdensome to include all of the beams with its application. ATCONTACT also states that it would provide additional gain contour files for other spot beams upon Commission request.* We find that the four representative beams do not provide sufficient information to allow us to determine whether ATCONTACT's modified space stations will operate in conformance with the Commission's rules and will not cause interference to other systems. In light of ATCONTACT's claim that including the contour information for each beam is burdensome, ATCONTACT may, in lieu of providing the information as set forth in the rules, either: 1. Provide a text file with a table listing all 180 transmitheceive beams (labeled by city and state), the boresight latitude, the boresight longitude, the EIRP at boresight, and the associated antenna beamwidth (major and minor axis for each beam, as well as the orientation of the major axis, as required to generate the beams in GIMS). Within ' 47 C.F.R. 6 25.1 14(d)(3). 'ATCONTACT COMMUNICATIONS, LLC, File Nos. SAT-MOD-20070924-00130, Technical Appendix, at 22-23; SAT-AMD-2007 1215-00176, Technical Appendix, at 24-25; SAT-AMD-20080505- 00 100, Technical Appendix, at 26; SAT-AMD-20080505-00096, Technical Appendix, at 22; SAT-MOD- 20070924-00 132, Technical Appendix, at 25; and SAT-AMD-20080505-00099, Technical Appendix, at 25.

the same text file, ATCONTACT must include a second table containing the half cone angle (in degrees) for each contour level (-2, -4, -6, -8, -10, -15, and -20 dB) for the representative co-polarized contours of the spot beams. 2. Provide a text file with a table listing all 180 transmitlreceive beams (labeled by city and state), the boresight latitude and the boresight longitude, along with the predicted space station antenna gain contours for each transmit and receive beam (a total of 180 beams) in .pdf format showing the contour levels (-2, -4,-6, -8, -10, -15, and -20 dB) of the spot beams. We also note that the link budget information for the 7MOOG7W7700KG2W, lMOOFXD, 125MG7W, and 600KG7D emission designators in the Technical Appendix of the above- referenced applications has not been provided in Schedule S, Sections S 11 and S 12. Please provide all of the information required in these sections of the Schedule S forms. Accordingly, ATCONTACT COMMUNICATIONS, LLC must amend its Schedule S forms to include the requested information. ATCONTACT COMMUNICATIONS, LLC must file its response in the form of amendments to each of the underlying modification applications within 15 days of the date of this letter, with a courtesy copy to Kal Krautkramer of my staff. Failure to respond by this date may result in dismissal of the applications. Please contact Kal Krautkramer at (202) 418-1335 if you have any questions. Sincerely, Robert G. Nelson Chief, Satellite Division International Bureau cc: Mr. David M. Drucker Manager, ATCONTACT COMMUNICATIONS, LLC ... - . m- T'I i . .c 1 - * . ' T


Document Created: 2008-09-15 16:06:02
Document Modified: 2008-09-15 16:06:02
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC