Return-Path: X-Spam-DCC: paranoid 1290; 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=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL 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 t4JAIdeb023097 for ; Tue, 19 May 2015 12:18:40 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YueYj-0003qU-Jb for rs_out_1@blacksheep.org; Tue, 19 May 2015 11:15:37 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YueYj-0003qL-80 for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 11:15:37 +0100 Received: from know-smtprelay-omc-2.server.virginmedia.net ([80.0.253.66]) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1YueYh-00082x-I1 for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 11:15:36 +0100 Received: from [192.168.1.6] ([86.31.33.210]) by know-smtprelay-2-imp with bizsmtp id VmFa1q0094Y1DuW01mFa6K; Tue, 19 May 2015 11:15:34 +0100 X-Originating-IP: [86.31.33.210] X-Spam: 0 X-Authority: v=2.1 cv=RLtOZNW+ c=1 sm=1 tr=0 a=jn/JOh/JfiX48zzdjRLp/g==:117 a=jn/JOh/JfiX48zzdjRLp/g==:17 a=8nJEP1OIZ-IA:10 a=NLZqzBF-AAAA:8 a=F3M5lZpKAAAA:8 a=oCcaPWc0AAAA:8 a=jxgWbcTv7MwIddXN73UA:9 a=wPNLvfGTeEIA:10 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Tue, 19 May 2015 11:15:31 +0100 MIME-Version: 1.0 Message-ID: <555B1B53.6687.2F1817@mike.dennison.ntlworld.com> In-reply-to: References: , <4AE4F678C0204835B7E7EC05740E4C24@AGB>, X-mailer: Pegasus Mail for Windows (4.41) Content-description: Mail message body X-Scan-Signature: b08ad821341ca291e1fd930f7b9292d3 Subject: Re: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB Content-type: text/plain; charset=ISO-8859-1 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from Quoted-printable to 8bit by paranoid.lipkowski.org id t4JAIdeb023097 Status: O X-Status: X-Keywords: X-UID: 3146 Well, I am running around 400mW ERP (as stated on my Opera beacon) from a transmitter with 800W RF output giving 3,2A into an inverted-L 14m high with 5x14m parallel top wires. Antenna efficiency (assuming 80% tx PA efficiency) is 0.05%. I imagine G6AVK is running a lot less - from the reports it must be about 70mW ERP which suggests perhaps 0.1% antenna eficiency. His successes show how useful Op32 is.in producing reception at 1000km+ with that power level. Mike, G3XDV =========== > There is a interesting question .. > > Two LF stations , quite close , similar times , Colin running > 80 watts carrier power.. > > what power / Ae efficiency difference produced + 7 > and +8 dB at the Rx's ? > > 73-G > > > Rx at Mon, 18 May 2015 00:34:21 GMT > From G3XDV by DF1VB/3 Loc JO31SK > Frequency: 0.136 MHz (2200m), OPERA, -33dB > Distance: 536 km bearing 91° > > > Rx at Mon, 18 May 2015 00:34:21 GMT > From G3XDV by EB3FRN-1 Loc JN01MC > Frequency: 0.136 MHz (2200m), OPERA, -32dB > Distance: 1194 km bearing 174° > Using: Opera v1.5.7/Rptr V1.6 > Antenna: RX Op32 > > > > From: Graham > Sent: Monday, May 18, 2015 12:31 AM > To: rsgb_lf_group@blacksheep.org > Subject: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 > dB > > > Just 80 watts , just on the Op32 decode limit , dynamic with 5 > dB in hand ? > > 73-G, > > 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB in Montbrio > with .w + Bottom loaded Inverted L 11m x 21m > > 23:16 136 G6AVK de DF1VB/3 Op32 Deep Search 297 mi -40 dB in Dortmund > with .w + Bottom loaded Inverted L 11m x 21m > > > > > > > > > > > > From: Graham > Sent: Saturday, May 16, 2015 12:36 AM > To: rsgb_lf_group@blacksheep.org > Subject: LF: 22:54 136 G6AVK de DF1VB/3 Op32 Deep Search 297 mi -41 dB > in Dortmund > > > > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.5941 / Virus Database: 4342/9815 - Release Date: > 05/19/15 >