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 t4JLg4Mj025584 for ; Tue, 19 May 2015 23:42:04 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YupEK-0005Ju-KG for rs_out_1@blacksheep.org; Tue, 19 May 2015 22:39:16 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YupEK-0005Jl-5Q for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 22:39:16 +0100 Received: from smtpout2.wanadoo.co.uk ([80.12.242.42] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1YupEI-0001kf-9k for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 22:39:15 +0100 Received: from AGB ([95.148.100.6]) by mwinf5d30 with ME id VxfD1q00308GZ1K03xfDyv; Tue, 19 May 2015 23:39:13 +0200 X-ME-Helo: AGB X-ME-Date: Tue, 19 May 2015 23:39:13 +0200 X-ME-IP: 95.148.100.6 Message-ID: <2224FF6E83CA419A99141F2D8FD2935A@AGB> From: "Graham" To: References: , <4AE4F678C0204835B7E7EC05740E4C24@AGB>, <555B1B53.6687.2F1817@mike.dennison.ntlworld.com> In-Reply-To: <555B1B53.6687.2F1817@mike.dennison.ntlworld.com> Date: Tue, 19 May 2015 22:39:12 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Scan-Signature: 47a967f57bae6380aac0a0062beb1b4e Subject: Re: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 8bit 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: O X-Status: X-Keywords: X-UID: 3153 800 W ... Well that answers the question Mike ! But leaves another unexpected one .. Colin reports he has 80 watts carrier power , that puts your level at + 10 dB .. , there are + 3 dB's missing , I had anticipated a negative dB situation as from his description, he is using a bottom loaded single wire inv L... But, yes , correctly designed DSP is worth miles of wire and significantly reduces PSU load ! 73-Graham G0NBD -------------------------------------------------- From: "Mike Dennison" Sent: Tuesday, May 19, 2015 11:15 AM To: Subject: Re: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB > 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 >> > > >