X-GM-THRID: 1198304336055538294 X-Gmail-Labels: rsgb lf X-Gmail-Received: fbce06464eb3664b0ab11329400931feb2f0ad83 Delivered-To: daveyxm@gmail.com Received: by 10.54.70.14 with SMTP id s14cs23824wra; Sun, 19 Mar 2006 10:14:28 -0800 (PST) Received: by 10.65.248.17 with SMTP id a17mr1150590qbs; Sun, 19 Mar 2006 10:14:28 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id q17si1640075qbq.2006.03.19.10.14.27; Sun, 19 Mar 2006 10:14:28 -0800 (PST) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1FL2Mv-0006IJ-OU for rs_out_1@blacksheep.org; Sun, 19 Mar 2006 18:11:09 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1FL2Mv-0006IA-9l for rsgb_lf_group@blacksheep.org; Sun, 19 Mar 2006 18:11:09 +0000 Received: from olympus.pncl.co.uk ([195.224.180.233] helo=olive.pncl.co.uk) by relay1.thorcom.net with esmtp (Exim 4.51) id 1FL3xq-00013T-Dz for rsgb_lf_group@blacksheep.org; Sun, 19 Mar 2006 19:53:37 +0000 Received: from AUG2004 (cpc1-leat1-6-0-cust60.hers.cable.ntl.com [81.96.11.60]) (authenticated bits=0) by olive.pncl.co.uk (8.13.4/8.13.4) with ESMTP id k2JIBo7K016964 for ; Sun, 19 Mar 2006 18:11:51 GMT Message-ID: <003501c64b80$6cf488a0$0400a8c0@AUG2004> From: "Walter Blanchard" To: Date: Sun, 19 Mar 2006 18:10:29 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2670 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 X-Pinnacle-MailScanner-Information: Please contact the ISP for more information X-Pinnacle-MailScanner: Found to be clean X-MailScanner-From: blanch@pncl.co.uk X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,AWL=-0.043,HTML_40_50=0.086,HTML_MESSAGE=0.001 Subject: LF: Low power Tx Content-Type: multipart/alternative; boundary="----=_NextPart_000_0032_01C64B80.67D77B70" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.4 required=5.0 tests=BANG_MONEY,HTML_20_30, HTML_MESSAGE 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 Status: O X-Status: X-Keywords: X-UID: 5982 This is a multi-part message in MIME format. ------=_NextPart_000_0032_01C64B80.67D77B70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I found a Decca Aerial Testing Signal Generator Type 1615 at a junk sale = a few months ago. It's basically a xtal osc/driver/PA transmitter for LF = (Decca freqs 70-127 kHz). Very easily converted for 136 because the o/p = transformer is wide-band enough to cover 136 and needs no modifications. = Plug about 100 mW 136 kHz RF into a xtal socket and it will give out = 20-25w RF into 72 ohms (PA is 2x807's). My old Marconi 2019 SG was quite = adequate as signal source. Quite a lot were made so there may be a few = more appearing round the junk sales and if you see one it's well worth = =A35 of anyone's money! Walter G3JKV. ------=_NextPart_000_0032_01C64B80.67D77B70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I found a Decca Aerial Testing Signal = Generator=20 Type 1615 at a junk sale a few months ago. It's basically = a xtal=20 osc/driver/PA transmitter for LF (Decca freqs 70-127 kHz). Very = easily=20 converted for 136 because the o/p transformer is wide-band enough to = cover 136=20 and needs no modifications. Plug about 100 mW 136 kHz RF into = a xtal=20 socket and it will give out 20-25w RF into 72 ohms (PA is = 2x807's). My old Marconi 2019 SG was quite adequate as signal source. = Quite a=20 lot were made so there may be a few more appearing round the junk sales = and=20 if you see one it's well worth = =A35 of=20 anyone's money!
 
Walter G3JKV.
 
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