[amsat-bb] PSAT2 Future Operations

Tomáš Urbanec tommypnq at centrum.cz
Wed Jun 26 14:18:54 UTC 2019

Hi Paul,

Thanks for the interest in the PSK31 transponder, as Bob already pointed 
up, the downlink audio spectrum is shared, so at 280Hz and 374Hz are 
PSK31 beacon tlm streams from camera board and transponder board 
respectively. Then every 4 minutes the SSTV signal is present so if you 
plan experiments in PSK transponder, try to stay between the beacons and 
SSTV. Description of modes you can find at 

We would be glad to answer any questions about this experiments.

We are still awaiting for any positive confirmation of downlink signal 
at 435.350MHz as for us it is still below horizon. Any audio recordings, 
IQ data or at least pictures of reception would be welcomed.

            73! Tomas OK2PNQ and Ales OK2ALP

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