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CX2SA > SAT 26.06.04 15:55l 33 Lines 1361 Bytes #999 (0) @ AMSAT
BID : ANS-179.05
Read: DF6DBF GUEST
Subj: ECHO's Digital Modes
Path: DB0FHN<DB0FOR<DB0MRW<OK0PKL<OK0PPL<DB0RES<ON0AR<7M3TJZ<F6CDD<I0TVL<
CX2SA
Sent: 040626/1345Z @:CX2SA.LAV.URY.SA #:44775 [Minas] FBB7.00e $:ANS-179.05
From: CX2SA@CX2SA.LAV.URY.SA
To : SAT@AMSAT
AMSAT News Service Bulletin 179.05 From AMSAT HQ
SILVER SPRING, MD. June 27, 2004
To ALL RADIO AMATEURS
BID: $ANS-179.05
Echo uses the Pacsat Broadcast Protocol (PBP) and is compatible with
other digital satellites, such as UO22 and KO25. WiSP is the tool of
choice, and what the command team has been using to test Echo's store
and forward file system. There are many Wisp users in the Amsat
community, so getting help, and answers to questions, regarding setting
up and operating Wisp should be as simple as a quick post to the
Amsat-BB. Wisp can be download from the Amsat website,
http://www.amsat.org/amsat/ftpsoft.html#win-wisp, and registered with
Martha at the Amsat office.
Echo will initially run in 9k6 downlink and 9k6 uplink mode, just like
UO22. Echo is capable of many other bps rates, and will be tested and
operated in 38k4 downlink and 9k6 uplink mode during commissioning.
These digital configurations will be tested on the U band and the S
Band Transmitters. Echo is capable of 76k8 downlink as well, and will
eventually be tested in that mode.
The first signals heard from Echo will be 9k6 PBP. Plans call for Echo,
in the standard mode, to operate one of its U band transmitters in PBP
digital mode continuously.
[ANS thanks Mike, KE4AZN for the above information]
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