Return-Path: Received: from rly-dg08.mx.aol.com (rly-dg08.mail.aol.com [172.19.151.92]) by air-dg02.mail.aol.com (v121_r5.5) with ESMTP id MAILINDG024-5e34964942b2b8; Wed, 07 Jan 2009 06:38:27 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dg08.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDG082-5e34964942b2b8; Wed, 07 Jan 2009 06:38:20 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LKWjl-0007ju-GJ for rs_out_1@blacksheep.org; Wed, 07 Jan 2009 11:38:13 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LKWjl-0007jl-3c for rsgb_lf_group@blacksheep.org; Wed, 07 Jan 2009 11:38:13 +0000 Received: from smtp-out-1.talktalk.net ([62.24.128.231] helo=smtp.talktalk.net) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LKWjk-0006vO-BQ for rsgb_lf_group@blacksheep.org; Wed, 07 Jan 2009 11:38:13 +0000 X-Path: TTSMTP X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AuUEAPkiZElOlWZt/2dsb2JhbACEVssIhXU Received: from unknown (HELO mal769a60aa920) ([78.149.102.109]) by smtp.talktalk.net with SMTP; 07 Jan 2009 11:38:06 +0000 Message-ID: <007f01c970bc$685a22f0$0301a8c0@mal769a60aa920> From: "mal hamilton" To: References: <00b701c97028$b2fd5780$0301a8c0@mal769a60aa920> <20090106225336.ujvel5oa3i84okkc@webmail4.kuleuven.be> Date: Wed, 7 Jan 2009 11:38:05 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Karma: 0: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Razor blade RX Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit 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 Please answer the question. I did not ask if it could be used on 500 at present., but if so one would TX using MCW or Keyed Tone and old spy tric. g3kev ----- Original Message ----- From: "Rik Strobbe" To: Sent: Tuesday, January 06, 2009 9:53 PM Subject: Re: LF: Razor blade RX > Mal, > > I did build a "crystal radio" with a razor blade as detector when I > was 14 years old. > It had to be rusty to work properly and even then it was a very poor > detector. > And it is an AM detector, so not useable for ham signals on 500kHz. > > 73, Rik ON7YD - OR7T > > > Quoting mal hamilton : > >> Since I mentioned a Razor blade and fence wire RX a while back I >> have had several requests for a circuit. To give others the >> opportunity to submit a cct I will await replies. This method was >> used successfully at Coldiz and other POW camps to receive BBC >> broadcasts. >> Let us know how you would approach the subject. This is applicable >> to MF/LF since the broadcasts at the time were receicved on these >> bands. >> Build one and have a QSO using this RX >> g3kev >> > > > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm > > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.3/1879 - Release Date: 1/6/2009 5:16 PM