[amsat-bb] Chubusat question

Andrew Glasbrenner glasbrenner at mindspring.com
Sun Feb 7 18:51:20 UTC 2016

Gaussian Minimum Shift Keying...some of the soundcard software will decode
it, as will some packet modems. My suggestion is to watch some of the more
active JA hams webpages and blogs for the best information on how to use
these if and when they are opened for amateur use. JE9PEL is one page I look
at often for information on the JA satellites

I sure wish some of these carried Mode J transponders, but I'll probably try
the digital payloads when available. It looks like they are using the V/U
system for initial checkout, and then to the 8GHz link once it's stabilized
and usable. 

73, Drew KO4MA

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Mark Lunday
Sent: Sunday, February 07, 2016 12:22 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Chubusat question

Under the information for Chubusat 2 it says:


ChubuSat-2 provides the message exchange service. After the on-orbit
checkout of the satellite, you can use the service, sending your message
with amateur VHF (145.815MHz FSK 1200bps) then your message is written to
the on-board memory. Anyone can read your message with amateur UHF (437.1MHz
GMSK 9600bps) by sending inquiry message. The uplink/downlink format will be
available in this page.


I understand the 145.815 1200 bps FSK - this is the same as for NO-44, NO-84
and ISS.

But what is GMSK 9600?  How is that decoded?  And how does one request a
'message read' on this cubesat?

Mark Lunday, WD4ELG
Greensboro, NC  FM06be
wd4elg at arrl.net

Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list