[amsat-bb] Re: ARISSat-1 CW tlm

Gould Smith gouldsmi at bellsouth.net
Sat Jul 30 18:45:50 PDT 2011

Hello Masahiro,

Thank you for the report.

BPSK-1000 looks like the old 400 bps signals on a spectrum analyzer, but 
sounds more like a shusch than a raar, if that makes sense. There is a 400 
bps BPSK signal capability on board, but should only come into play if the 
BPSK-1000 is not working.  We have 1000's of hours running the satellite and 
have not seen a switch to the 400 bps mode.
Try listening to an old recording of AO-13 or AO-40 and see if it is not 
quite a bit lower in frequency.

Telemetry values look good.  I am anxiously awaiting my local 2:30 am pass.

----- Original Message ----- 
From: "Masahiro Arai" <m-arai at a.email.ne.jp>
To: <amsat-bb at amsat.org>
Sent: Saturday, July 30, 2011 9:08 PM
Subject: [amsat-bb] ARISSat-1 CW tlm

> 0051z pass was also good signal from ARISSat-1 and ISS. SSTV, voice
> msg and voice tlm were heard.
> Is the BPSK 1000bps? The sound looks like 400bps for me.
> Here is CW telemetry which I decoded.
> 7/30 2140z
> cp +24c bat 30.07v -214ma rf 500ma hi this is ariss
> 7/30 2318z
> -197ma rf 443ma hi this is ariss at 1 rs01s n6cl
> 7/31 0056z
> bat 29.72v -214ma rf 346ma hi this is ariss at 1 rs
> 73
> Masa  JN1GKZ
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