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[195.171.43.25]) by mx.google.com with ESMTP id b13si4392939wik.8.2013.11.18.14.14.06 for ; Mon, 18 Nov 2013 14:14:07 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@mx.aol.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ViWXn-0002Pu-Vo for rs_out_1@blacksheep.org; Mon, 18 Nov 2013 21:39:43 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ViWXn-0002Ph-Cw for rsgb_lf_group@blacksheep.org; Mon, 18 Nov 2013 21:39:43 +0000 Received: from omr-d03.mx.aol.com ([205.188.109.200]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1ViWXk-0000e1-Of for rsgb_lf_group@blacksheep.org; Mon, 18 Nov 2013 21:39:42 +0000 Received: from mtaout-db05.r1000.mx.aol.com (mtaout-db05.r1000.mx.aol.com [172.29.51.197]) by omr-d03.mx.aol.com (Outbound Mail Relay) with ESMTP id 5B69770156534 for ; Mon, 18 Nov 2013 16:39:37 -0500 (EST) Received: from White (85.155.166.230.dyn.user.ono.com [85.155.166.230]) by mtaout-db05.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id C1EE8E00008E for ; Mon, 18 Nov 2013 16:39:25 -0500 (EST) Message-ID: <6EDA9B04BB1A40889A432C01DF16A896@White> From: "Markus Vester" To: References: <7999425CD9D44F318DA5D8EF87586DB4@White> <5287F539.1070107@iup.uni-heidelberg.de> <22FB893331D04C0AA4203527A27E527B@White> <72E5AADE740A475DA38C5E3A00A6AAC9@White> <841DB258581548699A86130F860DF165@White> <5289F307.7050809@iup.uni-heidelberg.de> Date: Mon, 18 Nov 2013 22:39:15 +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 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1384810777; bh=dgLtSKU5zszh+sG1oZzu5Ci6Z0/BOovD8zr3jenlPhs=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=uss8Xtm/Yfs5G9710dteIUYmgc3rJVA0qUHqAPKLwYnh1QGf2JpW/hFCLHRql1ikX eURBV986UyOUtlP6VckasLhiOFMEmuqWoLJNUBEVsj4N+xPHxiPTJWGmQPR+sFnk76 K/CEtaVYOMkJ1GE5A0jzB4AvfOybKfMn6tAXBHKY= x-aol-sid: 3039ac1d33c5528a890d3928 X-AOL-IP: 85.155.166.230 X-Spam-Score: -0.5 (/) 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: Hi Stefan, Bob, LF, brought the antenna back up for the night, hope it will stay put. I'm sorry about the mediocre sensitivity of the grabber in this location. The noise level seems to be constant irrespective of day or night, which is a sure indication that I'm dominated by local noise rather than band noise. The spectrum is full of 50 Hz spaced lines, with what looks like white noise inbetween. [...] Content analysis details: (-0.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [205.188.109.200 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.5 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: 9cafc73d135491d75f4f47d39ed43841 Subject: Re: LF: Lanzarote Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01CEE4AF.0286C700" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TITLE_EMPTY,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 Status: O X-Status: X-Keywords: X-UID: 2412 Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0004_01CEE4AF.0286C700 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Stefan, Bob, LF, brought the antenna back up for the night, hope it will stay put. I'm sorry about the mediocre sensitivity of the grabber in this = location. The noise level seems to be constant irrespective of day or = night, which is a sure indication that I'm dominated by local noise = rather than band noise. The spectrum is full of 50 Hz spaced lines, with = what looks like white noise inbetween. The hardware configuration is similar to the one which had worked best = during my springtime visit in 4X: a passive wire antenna with separate = earth lead, a small isolating ferrite tranformer, FiFi-SDR receiver with = a simple input filter, netbook and 19V power supply grounded to = protective earth. But here the antenna is lower (no trees on the = island), ground connection is worse (ashes and rock), and a noisy = environment. Not sure about the degree of directivity introduced by the = Famara ridge, but as it is going up by 400 to 600 m ASL it may well have = some effect. If I really wanted I could probably go out into the desert, take along a = couple of broomsticks to raise a wire, and record on battery for an hour = or so. But then there would be no internet connection, and it could only = be a single experiment of limited duration. Bob: if you want to try despite the RX deficits mentioned above, I would = recommend to use QRSS-60 or DFCW-90 in the TA slot (137775 - 137781), as = it will show traces at weaker levels than WSPR-15 would decode. http://dl.dropboxusercontent.com/u/26404526/df6nm_MF.jpg Best 73, Markus (EA8/DF6NM) =20 From: Stefan Sch=E4fer=20 Sent: Monday, November 18, 2013 11:59 AM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Lanzarote Hi Markus,=20 Thanks for the service.=20 Last night i tried again but there is no chance. It appears that the = DCF39 SNR is much lower than expected over that distance. Are you sure = this is due to the hill on the path to DCF? Do you think you can see the band noise / have the maximum sensitivity? = I assume there could be at least 10 dB, rather 20 dB to gain. How does = the diurnal wideband spectrum look there? Periodic QRM? And do you use the same equipment as in India last year? 73, Stefan/DK7FC Am 18.11.2013 10:39, schrieb Markus Vester:=20 Just went out and noticed that the wind had taken down the antenna wire = - hence the weak signals. 73, Markus From: Markus Vester=20 Sent: Monday, November 18, 2013 10:12 AM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Lanzarote No signals were captured here in the Eu / TA / WSPR-15 slots last night. = http://dl.dropboxusercontent.com/u/26404526/plot.jpg shows DCF39 and = HGA22 about 10 dB down on the night before. Best 73,=20 Markus (EA8/DF6NM) ------=_NextPart_000_0004_01CEE4AF.0286C700 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi = Stefan, Bob,=20 LF,
 
brought the antenna back up for = the night,=20 hope it will stay put.
 
I'm sorry about the mediocre = sensitivity of=20 the grabber in this location. The noise level seems to be constant = irrespective=20 of day or night, which is a sure indication that I'm dominated by = local=20 noise rather than band noise. The spectrum is full of 50 Hz spaced = lines, with=20 what looks like white noise inbetween.
 
The hardware = configuration  is similar to=20 the one which had worked best during my springtime visit = in 4X: a=20 passive wire antenna with separate earth lead, a small isolating = ferrite=20 tranformer, FiFi-SDR receiver with a simple input=20 filter, netbook and 19V power supply grounded=20 to protective earth. But here the antenna is lower (no trees = on the=20 island), ground connection is worse (ashes and rock), and a noisy=20 environment. Not sure about the degree of directivity = introduced=20 by the Famara ridge, but as it is going up by 400 to 600 = m=20 ASL it may well have some effect.
 
If I really wanted I could = probably=20 go out into the desert, take along a couple of=20 broomsticks to raise a wire, and record on battery for an hour or = so. But=20 then there would be no internet connection, and it could only be a = single=20 experiment of limited duration.
 
Bob: if you want to try = despite the RX=20 deficits mentioned above, I would recommend to use QRSS-60 or = DFCW-90 in=20 the TA slot (137775 - 137781), as it will show traces at = weaker levels=20 than WSPR-15 would decode.
 
http://= dl.dropboxusercontent.com/u/26404526/df6nm_MF.jpg
 
Best 73,
Markus (EA8/DF6NM)
  
 

Sent: Monday, November 18, = 2013 11:59=20 AM
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF:=20 Lanzarote

Hi Markus,

Thanks for the = service.
Last=20 night i tried again but there is no chance. It appears that the DCF39 = SNR is=20 much lower than expected over that distance. Are you sure this is due to = the=20 hill on the path to DCF?
Do you think you can see the band noise / = have the=20 maximum sensitivity? I assume there could be at least 10 dB, rather 20 = dB to=20 gain. How does the diurnal wideband spectrum look there? Periodic = QRM?
And do=20 you use the same equipment as in India last year?

73,=20 Stefan/DK7FC

Am 18.11.2013 10:39, schrieb Markus Vester: =
Just went out and noticed that the wind = had taken=20 down the antenna wire - hence the weak signals.
 
73, Markus

From: Markus Vester
Sent: Monday, November 18, = 2013 10:12=20 AM
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF:=20 Lanzarote

No signals were captured here in the Eu = / TA /=20 WSPR-15 slots last night.
http://dl.dropboxusercontent.com/u/26404526/plot.jpg<= FONT=20 face=3DArial size=3D2> shows DCF39 and HGA22 about 10 dB = down on the=20 night before.
 
Best 73,
Markus (EA8/DF6NM)
 
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