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Re: LF: Jason Tests / PSK31

from [G0MRF] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Jason Tests / PSK31
From: [email protected]
Date: Sun, 27 Jan 2002 08:29:34 EST
Reply-to: [email protected]
Sender: <[email protected]>
In a message dated 1/22/02 4:14:46 PM GMT Standard Time, [email protected] writes:


BTW, I think I asked before, but don't recall any responses - can anyone
recommend PSK31 software that has the TX phase keying signal available as a
logic level output? Since my TX will generate BPSK with appropriate
envelope shaping I would like to try this mode; but a sound card output
would be a bit messy - demodulate the audio signal, recover the phase data,
feed into LF TX modulator... a bit of wire would be so much easier!

Cheers, Jim Moritz
73 de M0BMU




Hi Jim.

I did try and chase this with some of the PSK31 authors as the SM6LKM/G0MRF DDS has a phase shift input for exactly that application. But in this world of analogue soundcards they thought an output of this type was not required.
It is possible to use some hardware and recover the phase data from the audio envelope, but it's hard work.

Let me know if you have any luck.

David  G0MRF
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