Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-md02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4B5C038000091; Sat, 24 Nov 2012 03:14:46 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TcArY-0007Cg-9v for rs_out_1@blacksheep.org; Sat, 24 Nov 2012 08:13:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TcArX-0007CX-E8 for rsgb_lf_group@blacksheep.org; Sat, 24 Nov 2012 08:13:19 +0000 Received: from imr-ma01.mx.aol.com ([64.12.206.39]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TcArU-0000hS-Qh for rsgb_lf_group@blacksheep.org; Sat, 24 Nov 2012 08:13:18 +0000 Received: from mtaout-ma02.r1000.mx.aol.com (mtaout-ma02.r1000.mx.aol.com [172.29.41.2]) by imr-ma01.mx.aol.com (Outbound Mail Relay) with ESMTP id A852438000098 for ; Sat, 24 Nov 2012 03:12:54 -0500 (EST) Received: from White (nrbg-4d074e10.pool.mediaWays.net [77.7.78.16]) by mtaout-ma02.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 4DD6DE000097 for ; Sat, 24 Nov 2012 03:12:51 -0500 (EST) Message-ID: <64671165298A4F2BA27128E01335C5B1@White> From: "Markus Vester" To: References: <001801cdc8ac$2d178a60$6401a8c0@JAYDELL> <44C230371E77406682712D2F96235816@White> <001901cdc976$c68fa900$6401a8c0@JAYDELL> Date: Sat, 24 Nov 2012 09:12:50 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1353744774; bh=zW6vesk0efe6jTH/4eAFEsTHtU3knoJs/PXUU5g7X6w=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=oEZVUW24XiyLDAI2PsWv6zWVmCmkySbzsCVsdNDc2GocP8bqNVd0k2oWJViqT8nEc MroDez0vvKcCEdKEojvgB1bHyu2Gl4laOLuMMW1Q7HkelXBFtaMvjjUSVzxcoel6jY FySRKCk89/t8QuoSp1DK8T0dLIVv8d0i4zmdx1/A= X-AOL-SCOLL-SCORE: 0:2:401100160:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.3 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Jay, thanks for the comments. Well honestly there hasn't been much change in the TX setup here, no secret tricks and no "solid one watt" here. About a month ago one of the neighbour families had a 12 m fir tree chopped down in the vicinity of my antenna, which has reduced losses and presumably also E-field shunting a bit. The antenna losses are now about 22 ohms. I have gained about a dB by reworking the matching between the class-D and antenna, which increased the output from 250 to about 320 watts, producing 3.8 amps on an average day. [...] Content analysis details: (0.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [64.12.206.39 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) 0.6 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server [77.7.78.16 listed in dnsbl.sorbs.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 0a8bac5594b583e1d7c1e245a9e3ea16 Subject: Re: LF: T/A Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CDCA23.E06405D0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_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-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-md02.r1000.mx.aol.com ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d605650b081f615f0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0009_01CDCA23.E06405D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jay,=20 thanks for the comments. Well honestly there hasn't been much change in = the TX setup here, no secret tricks and no "solid one watt" here. About a month ago one of the neighbour families had a 12 m fir tree = chopped down in the vicinity of my antenna, which has reduced losses and = presumably also E-field shunting a bit. The antenna losses are now about = 22 ohms. I have gained about a dB by reworking the matching between the = class-D and antenna, which increased the output from 250 to about 320 = watts, producing 3.8 amps on an average day. I did recently remeasure the effective height by comparing received = DCF-39 voltage against a small nonresonant loop, and still got only 8.5 = m (without the tree), ie 24 milliohm radiation resistance at LF. Thus = antenna efficiency is 0.11% and ERP is 0.64 W. Regarding receive, I have tried to improve the crossed loops by making = them larger and higher. The increased bandwidth has helped to stabilize = the colours of my RDF system. I have then also reinstalled the indoor = goniometer configuration, which in combination with the Marconi makes a = rotatable cardioid with good F/B ratio. Unfortunately there hasn't been = much benefit in this as the SNR performance of the loops is still rather = mediocre, due to severe pickup from DSL (the data uplink spectrum starts = at 138 kHz) and power lines.=20 Thanks for the continuous monitoring! Best 73,=20 Markus (DF6NM) From: jrusgrove@comcast.net=20 Sent: Friday, November 23, 2012 1:33 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: T/A Markus 'Best Of' from last night at http://www.w1vd.com/interestinggrab.html . = Would still like details on the big improvement in your signal this = season. Only minor improvements on the rx setup here so it must be on = your end. Hoping it isn't a 'trade secret' ;~) Jay W1VD WD2XNS WE2XGR/2 ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, November 22, 2012 5:04 PM Subject: Re: LF: T/A Jay, excellent! I'm glad we've got someone like you looking from the = other side of the water. Putting the "best of last night" capture online = is valuable, as most of us would have our eyelids closed at the time... Best 73,=20 Markus (DF6NM) From: jrusgrove@comcast.net=20 Sent: Thursday, November 22, 2012 1:23 PM To: rsgb_lf_group@blacksheep=20 Subject: LF: T/A Good signals from Stefan and Markus ... DST recovering to about -27nT. = Selected capture at=20 http://www.w1vd.com/grabber.html . Fadeout just after 0700Z. Jay W1VD WD2XNS WE2XGR/2=20 ------=_NextPart_000_0009_01CDCA23.E06405D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Jay,
 
thanks for the=20 comments. Well honestly there hasn't been much change in the TX setup = here, no=20 secret tricks and no "solid one watt" here.
 
About a = month ago one of=20 the neighbour families had a 12 m fir tree chopped down in the = vicinity of=20 my antenna, which has reduced losses and presumably also = E-field=20 shunting a bit. The antenna losses are now about 22 ohms. I = have=20 gained about a dB by reworking the matching between the class-D and = antenna, which increased the output from 250 to about 320 watts, = producing=20 3.8 amps on an average day.
 
I did recently remeasure the effective = height by=20 comparing received DCF-39 voltage against a small nonresonant loop, and = still=20 got only 8.5 m (without the tree), ie 24 milliohm radiation = resistance at=20 LF. Thus antenna efficiency is 0.11% and ERP is 0.64 = W.
 
Regarding receive, I have tried to = improve the=20 crossed loops by making them larger and higher. The = increased bandwidth=20 has helped to stabilize the colours of my RDF system. I have = then also=20 reinstalled the indoor goniometer configuration, which in = combination with=20 the Marconi makes a rotatable cardioid with good F/B ratio.=20 Unfortunately there hasn't been much benefit in this as the = SNR=20 performance of the loops is still rather mediocre, due to severe pickup=20 from DSL (the data uplink spectrum starts at 138 kHz) and power=20 lines. 
 
Thanks for the continuous = monitoring!
 
Best 73,
Markus (DF6NM)
 
Sent: Friday, November 23, 2012 1:33 PM
Subject: LF: T/A

Markus
 
'Best Of' from last night at  http://www.w1vd.com/int= erestinggrab.html .=20 Would still like details on the big improvement in your signal this = season.=20 Only minor improvements on the rx setup here so it must be on your=20 end. Hoping it isn't a 'trade secret'  ;~)
 
Jay W1VD  WD2XNS  = WE2XGR/2
 
 
----- Original Message -----
From:=20 Markus=20 Vester
Sent: Thursday, November 22, = 2012 5:04=20 PM
Subject: Re: LF: T/A

Jay, excellent! I'm glad we've got = someone like=20 you looking from the other side of the water. Putting the = "best of=20 last night" capture online is valuable, as most of us would have = our=20 eyelids closed at the time...
 
Best 73,
Markus (DF6NM)

Sent: Thursday, November 22, 2012 1:23 PM
Subject: LF: T/A

Good signals from Stefan and Markus ... DST = recovering=20 to about -27nT.  Selected capture at
http://www.w1vd.com/grabber.htm= l .=20 Fadeout just after 0700Z.

Jay W1VD  WD2XNS  WE2XGR/2=20


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