Re: [amsat-bb] PSK 31 Trial

["Jeff Griffin" <kb2m@xxxxxxxxxxx>]

 Didn't have time to debug my u/l. I have developed a very load hum on my tx 
that wasn't there last time I tried this setup, over two year's ago, no time 
to mess with now as I'm packing for Dayton. I did copy K8TL and N5UXT on the 
15:10z pass, both had very good sig's.  I will debug my PSK-31 sat setup 
when I get back home in two weeks....

73 Jeff kb2m


----- Original Message ----- 
From: "Jeff Griffin" <kb2m@comcast.net>
To: <amsat-bb@amsat.org>
Sent: Wednesday, May 18, 2005 9:47 AM
Subject: Re: [amsat-bb] PSK 31 Trial


> Took the day off to get ready for Dayton trip and noticed that AO-51 was 
> in PSK-31 mode. I don't run much PSK31 used to while hotel room portable 
> with an 817 so I was a little rusty. Last time I ran it on a sat was on 
> AO-40! Maybe my saved soundcard settings need tweaking. Ah, no one 
> magically showed up before the pass to help me setup. Any way enough 
> excuses, I did manage to get the d/l working and heard AA1YB once. I'm 
> running WINPSKse in fulldup mode but was unable to detect my PSK31 d/l, I 
> could see my CW track just fine. As it was a low pass, I will try setting 
> up  terrestrially and maybe be able to uplink next pass. I'm glad to 
> finally be in town to try this mode, Thanks. See you all next pass...
>
> 73 Jeff kb2m
>
> ----- Original Message ----- 
> From: "Robert Bruninga" <bruninga@usna.edu>
> To: <amsat-bb@amsat.org>; <jvanmetr@netpluscom.com>
> Sent: Wednesday, May 18, 2005 8:37 AM
> Subject: Re: [amsat-bb] PSK 31 Trial
>
>
>> Aw shucks.  Missed another one...
>> I wish there had been an announcement here
>> on the BB that there was to be a PSK31 test
>> on AO51...   Bob
>>
>>>>> "Jeff VanMeter" <jvanmetr@netpluscom.com> 5/17/2005 11:28:13 PM
>>>>>
>> Hello,
>>
>> I made several calls on the PSK 31 mode tonight.  I was running full
>> duplex
>> with two computers.  I was using the program TrueTTY.  Saw one other
>> signal,
>> but could not identify source.  I was able to get my call though just
>> in
>> pieces and grid locator using full duiplex.  I tried to manually adjust
>> the
>> dopler on the up link, but could not be persice enough.  I was also
>> running
>> AFC on the downlink, but that did not help a lot either.
>>
>> I wonder if it would be worth a try using RTTY 45 baud.  This should
>> have
>> less of a need for fine dopler correction.   I did run CW through the
>> bird.
>> It is a narrow band digital mode by definition and could make out the
>> down
>> link OK with that.
>>
>> Anyway, it was fun to try.  Maybe someone can try the RTTY mode and
>> make a
>> report if that is an acceptable narrow band mode???  I will not be able
>> to
>> try again this time as I will be at work tomorrow.  We should be able
>> to get
>> a couple of sigs through the bird at the same time.  Not as many as
>> would be
>> permissible with PSK, but maybe useful data could be exchanged.  It may
>> also
>> gove a chance to learn the dopler correction method better.
>>
>> Thanks for a try on an interesting mode.  Hope others had better
>> success.
>>
>> Jeff
>> KA8HQL
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