Andy,
CW telemetry is similar, but not identical
rs30 us160 ibs12 usun0 isun0 itxa8 itxb1 ttxa65 ttxb66 tnap80 tab66 msep0 mcon53 sma83 smb63 mrxa2 mrxb2 rs30 us159 isb12 usun1 isun0 itxa8 itxb0 ttxa65 ttxb66 tnap80 tab66 msep0 mcon53 sma86 smb71 mrxa2 mrxb2
rs28 ubs164 uaba166 uabb166 ibs3 iaba126 iabb126 ispa0 ispb126 taba133 tabb131 tsep136 mcon69 sma138 smb100 mra6 mrb30 rs28 ubs164 uaba172 uabb177 ibs2 iaba134 iabb134 ispa5 ispb133 taba132 tabb131 tsep136 mcon69 sma93 smb82 mra6 mrb30
73, Mike
-----Ursprüngliche Nachricht----- Von: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] Im Auftrag von andy thomas Gesendet: Sonntag, 27. September 2009 12:50 An: amsat Betreff: [amsat-bb] Re: RS-38 or RS-28?
All I can do is reproduce the exact text I have received. I'm told convincingly that the cw sent is RS 28 and not 38 but I haven't been listening for it myself. DK3WN's observations are the best that I know of.
I understand that DOKA can use two frequencies multiplexed for a higher throughput : see my page on RS-30 at:
http://sites.google.com/site/andythomasorg/amateur-satellites/rs-30-yubilein y
so I would expect that the two frequencies I have been given are centre frequencies for two ranges, each capable of being chosen from the ground station, depending on local qrm.
I imagine that the main ground station is at Moscow state university with a back up at Plis at Kaluga, who invented Doka.
Other participating universities within the Russian Federation will also have a DOKA groundstation (which may or may not be compatible), but the main telemetry of the scientific payloads will be on 1.7 GHz, so I don't expect you will hear DOKA if you are outside the footprint of >10 degrees elevation from Moscow (it will be interesting if you do).
Worldwide, I expect that the 435 MHz beacon when its frequency settles down is now just a CW beacon of housekeeping data. And it is pretty likely that the cw decode for the beacon is the same as rs-30 on my webpage.
73 de andy g0sfj
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