So I was able to copy Psat 435 mhz downlink today...nice !
Copying the beacon with digipan was quite easy. Watching the stations move diagonally across the waterfall was an interesting Display of the Doppler on the uplink. Watching the satellite today transmit then cease to transmit then transmit again raises one question.
Does someone have to be transmitting to the input of the satellite on 28MHz for the beacon / fm 435 MHz downlink to be active ?
Thanks, Mike W4UOO
Sent from my iPhone
Mike
Yes, PSK31 must be detected (or w3ado beacon must TX) before 70cm downlink transmits.
The diagonal moving stations were probably just terrestrial QSO' s .
Dave
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Sprenger Sent: Saturday, June 6, 2015 11:24 AM To: Amsat Bb-list Subject: [amsat-bb] PSAT downlink
So I was able to copy Psat 435 mhz downlink today...nice !
Copying the beacon with digipan was quite easy. Watching the stations move diagonally across the waterfall was an interesting Display of the Doppler on the uplink. Watching the satellite today transmit then cease to transmit then transmit again raises one question.
Does someone have to be transmitting to the input of the satellite on 28MHz for the beacon / fm 435 MHz downlink to be active ?
Thanks, Mike W4UOO
Sent from my iPhone _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Mike,
the PSK31 transponder is always in AUTO mode, listening for a PSK31 signal at 28.120 MHz.
73 Mike DK3WN
-----Ursprüngliche Nachricht----- Von: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] Im Auftrag von David W0DHB Gesendet: 06 June 2015 19:36 An: 'Mike Sprenger'; 'Amsat Bb-list' Betreff: Re: [amsat-bb] PSAT downlink
Mike
Yes, PSK31 must be detected (or w3ado beacon must TX) before 70cm downlink transmits.
The diagonal moving stations were probably just terrestrial QSO' s .
Dave
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Sprenger Sent: Saturday, June 6, 2015 11:24 AM To: Amsat Bb-list Subject: [amsat-bb] PSAT downlink
So I was able to copy Psat 435 mhz downlink today...nice !
Copying the beacon with digipan was quite easy. Watching the stations move diagonally across the waterfall was an interesting Display of the Doppler on the uplink. Watching the satellite today transmit then cease to transmit then transmit again raises one question.
Does someone have to be transmitting to the input of the satellite on 28MHz for the beacon / fm 435 MHz downlink to be active ?
Thanks, Mike W4UOO
Sent from my iPhone _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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David W0DHB -
Mike Rupprecht -
Mike Sprenger