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: http://youtu.be/qMv2-Rx6LAE
I would appreciate any comments or insights the list might have on this matter.
73 de CT2IWW, Paulo
Hi Paulo,
... you heard the beacon of Radio Sputnik 15 (RS-15).
http://www.dk3wn.info/p/?cat=29
73 Mike DK3WN
-----Ursprüngliche Nachricht----- Von: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] Im Auftrag von CT2IWW Paulo Teixeira Gesendet: Sonntag, 14. Oktober 2012 14:51 An: amsat-bb@amsat.org Betreff: [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: http://youtu.be/qMv2-Rx6LAE
I would appreciate any comments or insights the list might have on this matter.
73 de CT2IWW, Paulo _______________________________________________ Sent via AMSAT-BB@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
Paulo,
This is RS 15. See also Mike's page: http://www.dk3wn.info/sat/afu/sat_rs15.shtml
73, Nico PA0DLO
On 2012-10-14 14:50, CT2IWW Paulo Teixeira wrote:
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: http://youtu.be/qMv2-Rx6LAE
I would appreciate any comments or insights the list might have on this matter.
73 de CT2IWW, Paulo _______________________________________________ Sent via AMSAT-BB@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
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 CN87
----- Original Message ----- From: "CT2IWW Paulo Teixeira" ct2iww@gmail.com To: amsat-bb@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: http://youtu.be/qMv2-Rx6LAE
I would appreciate any comments or insights the list might have on this matter.
73 de CT2IWW, Paulo _______________________________________________ Sent via AMSAT-BB@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
Hello all,
I listened for it at sunday october 14th at 21:13 UTC aprox. The beacon signal starts at RS-15 AOS and then it became stronger as the elevation raised over my ground station. It also showed the typical doppler shift.
Please, excuse my ignorancy, but, can someone tell me a little bit about the history of this satellite? What happen to it, why it fail and when, and any other info like this. Is the transponder dead beyond recovery or can be return to operational?
Thanks!!!
73,
Raydel, CM2ESP EL83sc
--------------------
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 CN87
----- Original Message ----- From: "CT2IWW Paulo Teixeira" ct2iww@gmail.com To: amsat-bb@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: http://youtu.be/qMv2-Rx6LAE
I would appreciate any comments or insights the list might have on this matter.
73 de CT2IWW, Paulo _______________________________________________
Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas.
participants (5)
-
Bob- W7LRD -
CT2IWW Paulo Teixeira -
Mike Rupprecht -
Nico Janssen -
Raydel Abreu Espinet (CM2ESP)