Return-Path: Received: from rly-dc04.mx.aol.com (rly-dc04.mail.aol.com [172.19.136.33]) by air-dc06.mail.aol.com (v121_r4.4) with ESMTP id MAILINDC063-b1c497f9479d3; Tue, 27 Jan 2009 18:11:03 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc04.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDC048-b1c497f9479d3; Tue, 27 Jan 2009 18:10:55 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LRx4d-0000ld-OG for rs_out_1@blacksheep.org; Tue, 27 Jan 2009 23:10:27 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LRx4d-0000lS-Cx for rsgb_lf_group@blacksheep.org; Tue, 27 Jan 2009 23:10:27 +0000 Received: from simone.ucs.mun.ca ([134.153.232.77]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LRx4Z-0003s5-8E for rsgb_lf_group@blacksheep.org; Tue, 27 Jan 2009 23:10:27 +0000 Received: from plato.ucs.mun.ca (plato.ucs.mun.ca [134.153.232.153]) by simone.ucs.mun.ca (8.13.1/8.13.1) with ESMTP id n0RNAAue024029 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 27 Jan 2009 19:40:10 -0330 Date: Tue, 27 Jan 2009 19:40:10 -0330 (NST) From: jcraig@mun.ca X-X-Sender: jcraig@plato.ucs.mun.ca To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: <497EC187.90706@online.fr> MIME-Version: 1.0 X-Karma: unknown: X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,NO_REAL_NAME=0.55 Subject: Re: LF: LF T/A [184509 ] VO1NA Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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 X-Mailer: Unknown (No Version) Hi Dave, Henny and LF group, Thanks for the fine capture, Henny. With a bit of imagination, a complete callsign can be resolved. Dave, the TX comprises an F1AFJ synthesier with an output of 6 MHz buffered with a G3NYK BJT stage to a CMOS 4020 divide by 32 and keyed using the reset line with a diode matrix ID'er set at ~QRSS75. The 184.5093 square wave from the 4020 is fed to the gate of an IRF630 of a Class E amp (Thanks to Alan's spreadsheet design). The output is 10 watts. This goes to a pair of pie wound litz coils (~0.9 mH) whose separation is adjusted to tune a 100m wire at about 10m high. Matching is achieved using an autotransformer, although the resistive component appears to be close to 50 ohms. The aerial current is about 0.5 amps. 73 Joe On Tue, 27 Jan 2009, dave.riley3 wrote: > Hi Joe, > > Can you give us your TX details again? > > TNX > > Dave @ WD2XSH/17 > > > >