Alan,

"Interesting..."! You are so modest, sir. This could change Amateur Radio forever! Eagle will be a communications resources like none other in the history of the service.

73, John Champa - K8OCL & AAR5AH/T (MARS) AMSAT Life Member 1069

From: "Alan P. Biddle" APBIDDLE@mailaps.org Reply-To: APBIDDLE@mailaps.org To: amsat-bb@amsat.org Subject: [amsat-bb] Re: check out the amsat web site. Date: Sat, 7 Oct 2006 22:04:37 -0000

Interesting list of transmitters.

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AMSAT Board of Directors Approves Eagle Communications Payloads

AMSAT's Board of Directors met on 5 October in San Francisco, CA and approved the following Eagle communications payloads:

* A SSB/CW (etc.) transponder with uplink on U-band and downlink on

V-band. System design has a goal that it be usable over 75% of the orbit by an AO-13 or AO-40 capable ground station. * A SSB/CW (etc.) transponder with uplink on L-band and downlink on S1-band (2.4 Ghz). An AO-13 or AO-40 capable ground station will be able to use this payload. * A low rate text message system, like SMS. It will operate on U/V-bands and be usable over 75% of the orbit by a small terminal on the ground. * These transponders will be implemented using Software Defined Transponders (SDX).

Eagle will also carry an advanced communications payload (ACP). Using advanced signal processing and RF techniques, the ACP will allow:

* Voice communications on S2-band (3.4 Ghz) uplink and C-band (5.8 

Ghz) downlink using a single 60cm dish. The satellite antennas will be electrically steered to reduce spin modulation and allow use over 75% of the orbit. * An additional, fix-pointed, uplink will be available at L-band. This L-band uplink will require a separate uplink antenna at the ground station. * High rate data communications, such as streaming video, using a 2m dish on S2/C bands. * AMSAT will develop and make available an affordable ground segment for the ACP System.

Additional information will be posted here in the near future.

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