Return-Path: X-Spam-DCC: paranoid 1102; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id s9HAFndo004402 for ; Fri, 17 Oct 2014 12:15:51 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Xf4Um-0004vu-2f for rs_out_1@blacksheep.org; Fri, 17 Oct 2014 11:10:52 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Xf4Ul-0004vl-QH for rsgb_lf_group@blacksheep.org; Fri, 17 Oct 2014 11:10:51 +0100 Received: from smtpout.karoo.kcom.com ([212.50.160.34]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1Xf4Uk-0006hz-0L for rsgb_lf_group@blacksheep.org; Fri, 17 Oct 2014 11:10:50 +0100 X-IronPort-AV: E=Sophos;i="5.04,738,1406588400"; d="scan'208";a="18609007" Received: from unknown (HELO [127.0.0.1]) ([91.85.36.57]) by smtpout.karoo.kcom.com with ESMTP; 17 Oct 2014 11:10:49 +0100 Message-ID: <5440EB28.9040909@lineone.net> Date: Fri, 17 Oct 2014 11:10:48 +0100 From: LineOne User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <543FEEC5.5070503@lineone.net> <54402F53.20198.13D6F8C@mike.dennison.ntlworld.com> In-Reply-To: <54402F53.20198.13D6F8C@mike.dennison.ntlworld.com> X-Scan-Signature: e6de17d69e46ff4ea8db042ef2cd7e46 Subject: Re: LF: Experimental linear amplifier testing. Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: RO X-Status: X-Keywords: X-UID: 788 Yes Mike, very likely. I'm starting up in a few minutes, having had the "synthesiser" on for an hour. I have a 1:18 turns ratio output transformer on a pair of dust toroids and it looks as though I need to rewind it to increase this. Calibration is from a Racal-Dana frequency counter which is within 0.2Hz at 198kHz but my signals seem to appear at different frequencies according to individual grabbers. Hugh M0DSZ, IO82LS. On 16/10/2014 20:49, Mike Dennison wrote: > Hugh, I am seeing a weak signal that started around 2040UTC 1Hz lower > than you said, drifting LF over the next hour by about 0.7Hz. Too > weak to read anything. Could that be you? I will continue monitoring. > > Mike, G3XDV > IO91VT > =========== > >> This is to confirm that I am running some tests on 136.173kHz, QRSS60, >> latterly 150W dc input to a linear amplifier, mainly to determine >> aerial tuning and loading. I was too close to 136.172 earlier so moved >> away. I see that there is a frequency drift after switch on so I'll >> start the synthesiser 30 minutes earlier. It is unlikely that the >> transmission will reach very far at present. >> >> 73, Hugh, M0DSZ >> >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2014.0.4765 / Virus Database: 4040/8400 - Release Date: >> 10/16/14 >> > > >