[amsat-bb] Re: CO-65 digipeater success, sort of
Alan P. Biddle
APBIDDLE at UNITED.NET
Mon Nov 29 05:52:41 PST 2010
In looking around for information on 9600 baud GMSK, I find many reviews
dating back to the 1990s, and explanations on satellite project web pages,
that it is compatible with K9NG/G3RUH 9600 baud modulation. IF that is
correct, it should work with a strong signal. I recall (?) there is a
penalty amounting to a db or so. Perhaps one of the digital experts can
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Luc Leblanc
Sent: Sunday, November 28, 2010 11:38 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: CO-65 digipeater success, sort of
On 27 Nov 2010 at 22:20, Andrew Glasbrenner wrote:
Date sent: Sat, 27 Nov 2010 22:20:07 -0500
From: Andrew Glasbrenner <glasbrenner at mindspring.com>
Subject: [amsat-bb] CO-65 digipeater success, sort of
To: Amsat-BB <amsat-bb at amsat.org>
> Tonight I was successful in getting the L/U digipeater on CO-65 to
> respond to me, but was not able to decode it despite 10 over S9 signals
> at TCA. Uplink was UISS to AGW Engine to my KPC9612, IC910, KJ6KO amp,
> with about 30w at the antenna, a M2 35 element yagi. I'm interested if
> anyone outside of JA has had any luck with this, and what was being used
> to decode it?
> 73, Drew KO4MA
The UHF and VHF uplink and downlink use GMSK modulation:
CO-65 GMSK 9k6 digipeat
GMSK is now scheduled on every weekend over the world wide.
You can digipeat via CO-65 GMSK 9k6.
In Cute-1.7 + APD II, we provide the following services using 1200MHz uplink
and 430MHz downlink, on a trial basis.
1. Real-time relay communication service
2. Message box service
1267.6MHz high-speed packet communication (GMSK-9600bps) is used for uplink.
437.475MHz high-speed packet communication(GMSK-9600bps) is used for
The GMSK modulation is used in the D-STAR radio with the AMBE codecs i don't
know if the CUTE data can be decoded in the digital data
frames with the Icom D-STAR radio?
Luc Leblanc VE2DWE
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
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