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 t4JM3bbq025629 for ; Wed, 20 May 2015 00:03:37 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YupZ0-0005RY-Vm for rs_out_1@blacksheep.org; Tue, 19 May 2015 23:00:38 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YupZ0-0005RP-Id for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 23:00:38 +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 1YupYy-0001qg-Ll for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 23:00:37 +0100 Received: from AGB ([95.148.100.6]) by mwinf5d30 with ME id Vy0b1q00P08GZ1K03y0bxF; Wed, 20 May 2015 00:00:36 +0200 X-ME-Helo: AGB X-ME-Date: Wed, 20 May 2015 00:00:36 +0200 X-ME-IP: 95.148.100.6 Message-ID: <4DE3AB76972F47FEBC95288DB0FE9682@AGB> From: "Graham" To: References: <579355A36AEE9D4FA555C45D556003AB1B10678B@servigilant.vigilant.local> In-Reply-To: <579355A36AEE9D4FA555C45D556003AB1B10678B@servigilant.vigilant.local> Date: Tue, 19 May 2015 23:00:35 +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: 18c242620d7d7b91a1caf5740aa3e326 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: 3154 Hi Luis The gain would be the same , 5 dB , but first it would need to be added and that's another story ... being dynamic , tx and rx stability would need to be higher as there is no afc , its possible a much higher s/n could be achieved , but that would require , complimentary high-stab hardware , dynamic is configured to use the same as the opera decoder ... But, from the 136 Dx fade patterns , its possible OP2 H would provide medium range DX on 136 , may not on the ultimate 'dx' path , which appears to show windows in the 30 min period , OP32 dynamic may do the job .. but first , need a RX down there ! The s/n measurement hand over Opera > dynamic is linear , s/n average along the time line 73-G, -------------------------------------------------- From: "VIGILANT Luis Fernández" Sent: Tuesday, May 19, 2015 11:46 AM To: Subject: RE: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB > Hi Mike > > Op32 with dynamic search is a fantastic tool indeed. Despite of the > "fantastic" false decodes from time to time ! > But those can be easily discharged, specially when having local reports of > the Tx station > > I made an experiment comparing Op2H (no deep search) with Op32 and it > showed out that both modes perform very similar > The experiment was made transmitting with U3 consecutive frames in Op32 > and Op2H. I'm using a mechanically adjustable > vertical antenna so trimmed it down in order to get just a signal hardly > decoded on my monitor QTH at 7Km > It is amazing to check how just a little of vertical antenna height > increase can boost the Tx signal ! :-) > > I set the results in an small Excel you can get here > https://dl.dropboxusercontent.com/u/7162072/Docs/Pruebas%20Op2H%20versus%20Op32.xls > > The question is .... What should be expected from a Op2H with Dynamic > Search ?? > > 73 de Luis > EA5DOM > > > > -----Mensaje original----- > De: owner-rsgb_lf_group@blacksheep.org > [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de Mike Dennison > Enviado el: martes, 19 de mayo de 2015 12:16 > Para: rsgb_lf_group@blacksheep.org > Asunto: 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 >> > > > > >