Return-Path: Received: (qmail 21770 invoked from network); 27 Jan 2002 13:36:15 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by exhibition.plus.net with SMTP; 27 Jan 2002 13:36:15 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 6149 invoked from network); 27 Jan 2002 13:36:10 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 27 Jan 2002 13:36:10 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16UpPy-00056L-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 27 Jan 2002 13:32:22 +0000 Received: from imo-d06.mx.aol.com ([205.188.157.38]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16UpPx-00056E-00 for rsgb_lf_group@blacksheep.org; Sun, 27 Jan 2002 13:32:21 +0000 Received: from G0MRF@aol.com by imo-d06.mx.aol.com (mail_out_v31_r1.26.) id l.a3.22ab65a1 (17528) for ; Sun, 27 Jan 2002 08:29:35 -0500 (EST) From: G0MRF@aol.com Message-ID: Date: Sun, 27 Jan 2002 08:29:34 EST Subject: Re: LF: Jason Tests / PSK31 To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Mailer: AOL 6.0 for Windows UK sub 10510 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit In a message dated 1/22/02 4:14:46 PM GMT Standard Time, j.r.moritz@herts.ac.uk 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