I've been observing that with the current keps the Downlink frequency of the PSK31 beacon is about 2Khz low.
A good US pass over the US at about 1936.
What I have been doing is decoding the entire 3 KHz with DM780's Supersweeper or Fldigi and fixing TX at about 600Hz.
That way I catch everybody and there is no need to match frequencies.
I've been trying to TX below 1KHz to minimize interfering with folks operating normal 10m PSK.
Dave W0DHB
I noticed the satellite about 1.5 minutes behind the original ULTRASAT3 elements. I also noticed W0DHO calling CQ PSAT. And a few other signals. Remember, operate full duplex and just leave your transmitter on the full pass and keep your CQ dump going while watching for responses the entire pass. Since most PSK31 programs don't run full duplex, you might need to run two instances? Good luck figuring out the sound cards!
Bob
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of David W0DHB Sent: Saturday, May 30, 2015 2:50 PM To: [email protected] Subject: [amsat-bb] PSAT PSK31 downlink
I've been observing that with the current keps the Downlink frequency of the PSK31 beacon is about 2Khz low.
A good US pass over the US at about 1936.
What I have been doing is decoding the entire 3 KHz with DM780's Supersweeper or Fldigi and fixing TX at about 600Hz.
That way I catch everybody and there is no need to match frequencies.
I've been trying to TX below 1KHz to minimize interfering with folks operating normal 10m PSK.
Dave W0DHB
_______________________________________________ Sent via [email protected]. 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
It might be worth mentioning: fldigi has a command-line paramer (--condig-dir maybe?) that can be used to set up two instances of the program, listening to two separate frequencies on two separate sound card devices.
(I am away from my computer, so I am not positive about the parameter....)
-- Michael Adams | [email protected]
-------- Original message -------- From: Robert Bruninga [email protected] Date: 2015/05/31 12:27 (GMT-05:00) To: David W0DHB [email protected], [email protected] Subject: Re: [amsat-bb] PSAT PSK31 downlink
I noticed the satellite about 1.5 minutes behind the original ULTRASAT3 elements. I also noticed W0DHO calling CQ PSAT. And a few other signals. Remember, operate full duplex and just leave your transmitter on the full pass and keep your CQ dump going while watching for responses the entire pass. Since most PSK31 programs don't run full duplex, you might need to run two instances? Good luck figuring out the sound cards!
Bob
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of David W0DHB Sent: Saturday, May 30, 2015 2:50 PM To: [email protected] Subject: [amsat-bb] PSAT PSK31 downlink
I've been observing that with the current keps the Downlink frequency of the PSK31 beacon is about 2Khz low.
A good US pass over the US at about 1936.
What I have been doing is decoding the entire 3 KHz with DM780's Supersweeper or Fldigi and fixing TX at about 600Hz.
That way I catch everybody and there is no need to match frequencies.
I've been trying to TX below 1KHz to minimize interfering with folks operating normal 10m PSK.
Dave W0DHB
_______________________________________________ Sent via [email protected]. 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 [email protected]. 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 -
Michael Adams -
Robert Bruninga