When PSAT launched, the recommended PSK31 TX power was no more than 25W. Has that changed?
Yes, he web page now says 100 or what is needed to communicate...
Bob, WB4APR
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of Ted Sent: Monday, October 19, 2015 7:13 PM To: 'KO6TZ Bob'; [email protected] Subject: Re: [amsat-bb] PSK31 Satellite Transponder works!
When launched, the recommended TX power was no more than 25W. Has that changed?
73, Ted K7TRK
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of KO6TZ Bob Sent: Friday, October 16, 2015 12:04 PM To: [email protected] Subject: Re: [amsat-bb] PSK31 Satellite Transponder works!
Bob,
I was just on the 1820u 16Oct15 pass. 10m was high in noise, so the down link was hard copy of my own signal. I only saw one other Doppler corrected station (vertical PSK signal) just before LOS. Could not display the call sign.
A couple of hints to successful contacts:
1. Do not correct for Doppler by shifting the frequency on your 10m radio. 2. Use the Doppler PSK program, allow it to correct for Doppler by shifting the PSK-31 frequency. 3. Update the TLE's in the Doppler PSK program (copy / paste) 4. Once you are able to see your signal on the down link, NEVER stop sending until the end of the pass. "Homestead" that frequency. Just switch from CQ to the QSO sequences for a contact. 5. Look for other stations somewhere in the VF pass band. 6. This procedure is different than working PSK-31 on HF. So is the power level.
BOB KO6TZ
ON4HTI... will be participating in the... SCR, > and we always do a
lot of PSK... on 10-15-20m
Don't forget to listen to the PSK31 downlink on PSAT (NO84). Its FM downlink is the audio copy of everything the satellite hears on the normal 28.120 MHz ten meter PSK31 terrestrial hangout.
And of course since the downlink (FM) adds no doppler, most signals come in just fine and can be decoded by any PSK31 clients.
AND of course, being full duplex, it is fun to be transmitting to EVERYONE in the passband at the same time you are seeing EVERYTHING everyone is saying.
Try it...
Bob, WB4aPR
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_______________________________________________ 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