Return-Path: Received: from rly-da05.mx.aol.com (rly-da05.mail.aol.com [172.19.129.79]) by air-da06.mail.aol.com (v124.15) with ESMTP id MAILINDA062-a6c4a6438e0156; Mon, 20 Jul 2009 05:29:23 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-da05.mx.aol.com (v124.15) with ESMTP id MAILRELAYINDA054-a6c4a6438e0156; Mon, 20 Jul 2009 05:29:08 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MSp9i-0003ok-Po for rs_out_1@blacksheep.org; Mon, 20 Jul 2009 10:27:34 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MSp9i-0003ob-0w for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2009 10:27:34 +0100 Received: from smtp.qtxt.dns-iol.com ([195.200.78.13]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MSp9e-0008QU-6I for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2009 10:27:32 +0100 Received: (qmail 2119 invoked by uid 507); 20 Jul 2009 11:27:12 +0200 Received: from unknown (HELO JR) (john.rabson@numeo.fr@217.67.155.178) by smtp.qtxt.dns-iol.com with SMTP; 20 Jul 2009 11:27:12 +0200 Message-ID: <200907201127160920.105049C2@smtp2.numeo.fr> X-Mailer: Courier 3.50.00.09.1098 (http://www.rosecitysoftware.com) (P) Date: Mon, 20 Jul 2009 11:27:16 +0200 From: "John RABSON" To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: OT: Racal SA33 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 I have a Racal SA33 frequency converter, which uses RA 17 technology to su= btract 1 to 29 MHz from the input frequency for feeding to a frequency cou= nter. It seems to have been designed in the era when most frequency count= ers did not go above 1 MHz. It has been fitted with an internal 1 MHz ref= erence. It has not been used for more than 30 years, so it may be of more interest= to a collector. Nevertheless, if anyone is interested will they please= let me know. The equipment is at present at my house in Suffolk. I have a couple of pages of circuitry. 73 John F5VLF