Return-Path: Received: (qmail 18245 invoked from network); 2 Feb 2002 14:56:44 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by exhibition.plus.net with SMTP; 2 Feb 2002 14:56:44 -0000 Received: (qmail 22719 invoked from network); 2 Feb 2002 14:56:37 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 2 Feb 2002 14:56:37 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16X1Wk-0005u0-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 02 Feb 2002 14:52:26 +0000 Received: from carbon.btinternet.com ([194.73.73.92]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16X1Wk-0005tv-00 for rsgb_lf_group@blacksheep.org; Sat, 02 Feb 2002 14:52:26 +0000 Received: from host217-34-95-10.in-addr.btopenworld.com ([217.34.95.10] helo=dellboy) by carbon.btinternet.com with smtp (Exim 3.22 #8) id 16X1Vw-0004dn-00 for rsgb_lf_group@blacksheep.org; Sat, 02 Feb 2002 14:51:36 +0000 Message-ID: <002901c1abf9$21428ae0$1700a8c0@home> From: "Dave Pick" To: "LF Group" Subject: LF: New DDS design Date: Sat, 2 Feb 2002 14:51:43 -0000 MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit

Dear All.

If you can't get to grips with PIC chips and surface-mount technology but still need a stable VFO for 136, try this.

It's a hardware DDS by Pavel, OK1DX, built with 74HC series chips covering the band in 256 10Hz steps.

You could easily pull the master oscillator to make DFCW.

Have a look at:

http://www.wireless.org.uk/dds.htm

My Vero-board lash-up works a treat!

Dave

G3YXM.