Return-Path: Received: (qmail 13282 invoked from network); 26 Sep 2002 12:03:05 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 26 Sep 2002 12:03:05 -0000 Received: (qmail 6813 invoked by uid 10001); 26 Sep 2002 13:07:25 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 26 Sep 2002 13:07:25 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 17uXKk-00088g-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 26 Sep 2002 13:01:30 +0100 Received: from [165.212.11.110] (helo=cmsoutbound.mx.net) by post.thorcom.com with smtp (Exim 4.10) id 17uXKk-00088W-00 for rsgb_lf_group@blacksheep.org; Thu, 26 Sep 2002 13:01:30 +0100 Received: from uadvg130.cms.usa.net (HELO cmsoutbound.mx.net) (165.212.11.130) by cmsoutbound.mx.net with SMTP; 26 Sep 2002 12:01:24 -0000 Received: from usa.net [32.97.110.76] by uadvg130.cms.usa.net (ASMTP/dibene@usa.net) via mtad (CM.1201.1.04A) with ESMTP id 207giZmBy0335M30; Thu, 26 Sep 2002 12:01:25 GMT Message-ID: <3D92F6F1.8030900@usa.net> Date: Thu, 26 Sep 2002 14:00:49 +0200 From: "Alberto di Bene" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: Subject: Re: LF: Question on JASON to transmitter interface??? Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.6 required=5.0tests=SUBJ_ENDS_IN_Q_MARK,SUBJ_HAS_Q_MARKversion=2.31 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group WE0H wrote: >How does one connect the sound card to the transmitter and what kind of >audio signal is present on the cable to the transceiver from the sound >card??? > > Mike, the output from the sound card is a sinusoidal signal at the so-called line level, usually a bit less than 1V pk-pk, and the frequency is that of the center frequency set in the options of the program (default 800 Hz) plus or minus the delta carrying the information. Max deviation is plus or minus 2 Hz. To feed it to a transceiver microphone input, you will need a passive attenuator (a couple of resistors), to bring it to the level required by the rig you are using. 73 Alberto I2PHD