[amsat-bb] Re: 29.351 Mhz odd signal

Bob- W7LRD w7lrd at comcast.net
Sun Oct 14 07:40:00 PDT 2012

I just monitored the same signal in CN97wk ( Seattle Wa.). The signal disappeared at my LOS. I even threw some RF at it while listening for a downlink. Thinking of another AO-7 born again!! Paulo the satellite is now at your QTH 1437Z. We seem to be scrapping the bottom of the barrel looking for use able satellites. Like Frank K4FEG says work them till they fall out of the sky. 
73 Bob W7LRD 

----- Original Message -----
From: "CT2IWW Paulo Teixeira" <ct2iww at gmail.com> 
To: amsat-bb at amsat.org 
Sent: Sunday, October 14, 2012 5:50:39 AM 
Subject: [amsat-bb] 29.351 Mhz odd signal 

Dear friends, 

I've been monitoring for the past two weeks a chirping sound on 29.351 Mhz 
that has me baffled. Since I believe it is inside the sat sub-band, I 
wonder if there is an old bird that's still up in the air that sends some 
kind of telemetry signal around this frequency. 

The signal in question consists series of chirps or beeps, even spaced and 
at about a rate of two per second. It drifts very slowly at times and the 
chirps become longer as it moves down the range. It usually starts around 
29352.5 and ends near 29350. 0. However there are times when the signal is 
steady and doesn't move. As I write this, the signal just disappeared 
around 12:32 UTC at my location, at grid IN51. 

The only sat that would be the likely suspect could be RS-15 but I've had 
times that I could hear the signal when i'snt up in my sky. I've checked 
the AMSAT frequency charts and RS-15 has a CW Beacon downlink on 29.3525Mhz 
listed as "semi-operational". This frequency range is also within SEDsat's 
OSCAR-33 transponder downlink but is listed as non-operational. 

I've made a small movie a few days ago, that is published on youtube, here: 

I would appreciate any comments or insights the list might have on this 

73 de CT2IWW, Paulo 
Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author. 
Not an AMSAT-NA member? Join now to support the amateur satellite program! 
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb 

More information about the AMSAT-BB mailing list