Return-Path: X-Spam-DCC: paranoid 1102; 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, HTML_MESSAGE 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 t4UIdwEp032059 for ; Sat, 30 May 2015 20:39:58 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YylaC-0000Tp-Lt for rs_out_1@blacksheep.org; Sat, 30 May 2015 19:34:08 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YylaC-0000Tg-2C for rsgb_lf_group@blacksheep.org; Sat, 30 May 2015 19:34:08 +0100 Received: from vms173019pub.verizon.net ([206.46.173.19]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.85) (envelope-from ) id 1Yyla9-0001k8-N4 for rsgb_lf_group@blacksheep.org; Sat, 30 May 2015 19:34:06 +0100 Received: from MichaelSappPC ([173.75.42.26]) by vms173019.mailsrvcs.net (Oracle Communications Messaging Server 7.0.5.32.0 64bit (built Jul 16 2014)) with ESMTPA id <0NP600JOCE870D80@vms173019.mailsrvcs.net> for rsgb_lf_group@blacksheep.org; Sat, 30 May 2015 13:33:48 -0500 (CDT) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=N5PUbDJB c=1 sm=1 tr=0 a=oKUm5Y82zOJV+M+GiW5KPw==:117 a=cWLe3gRRFjkA:10 a=o1OHuDzbAAAA:8 a=oR5dmqMzAAAA:8 a=-9mUelKeXuEA:10 a=h1PgugrvaO0A:10 a=r77TgQKjGQsHNAKrUKIA:9 a=9iDbn-4jx3cA:10 a=cKsnjEOsciEA:10 a=gZbpxnkM3yUA:10 a=nGp8szjaAAAA:20 a=vvkGHyT2AAAA:20 a=F3M5lZpKAAAA:8 a=Z4OZpw9PAAAA:20 a=1FM8wg4dAAAA:20 a=cMY1n2jJ9ElxpKA5pEgA:9 a=wPNLvfGTeEIA:10 a=3oc9M9_CAAAA:8 a=9rbqz98M5u6WLYveibcA:9 a=stvk_D1zP3w3t2bc:21 a=_W_S_7VecoQA:10 Message-id: From: "Michael Sapp" To: References: <5568E23F.5070907@posteo.de> <98550314F4E343FF8ACABAF3E7D5FC8B@MichaelSappPC> In-reply-to: Date: Sat, 30 May 2015 14:33:38 -0400 MIME-version: 1.0 X-Priority: 3 X-MSMail-priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 X-Scan-Signature: 8d5e679c4ecb21aeba32cebcefaae7cb Subject: Re: LF: Almost Content-type: multipart/alternative; boundary="----=_NextPart_000_000C_01D09AE5.9DFE6E70" 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: 3364 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01D09AE5.9DFE6E70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Markus: I do not think the QRM signals are spurious. I have built the = W1VD preselector for 475~500 kHz range and the offending signals are = still present when the preselector is used. Same with the FZ-02 filter. = There are some commercial and retail shops to my NE about 300~400 = meters away, possible that is the source. However, the offending QRM = signals are not consistent in frequency or strength from one day to the = next. QRM signals are not very strong, but strong enough to interfere = with a -27 to -30 SNR desired signal. =20 I use a pair of crossed EWE antennas to have four-way selectable = cardio patterns for NE, SW, SE, and NW directional reception. If I = switch to the NW direction, the QRM signals go away, but then = directivity to DK7FC would be about 4~5dB down. To the SW and SE = directions some QRM sources disappear, and other QRM sources appear. I = may try some phase steering between the two EWE antennas. It is an = ongoing learning process. Random chance could always prevail, so I = continue to listen, tinker, and occasionally even learn something ~:). = 73,=20 Mike wa3tts PS: I have received several F5WK wspr2 captures on 630m this last = December.... https://www.dropbox.com/s/wkfcl9gfyac5nlm/F5WKMAP.JPG?dl=3D0 https://www.dropbox.com/s/fzox0bk492h20dq/IMG_4142.JPG?dl=3D0 ----- Original Message ----- a From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, May 30, 2015 6:20 AM Subject: Re: LF: Almost Looks like Stefan ran into a Loran line... but wait, Loran is no = longer there in North America, and anyway we're on MF not LF. Mike any = idea what is causing those spurs? https://dl.dropboxusercontent.com/s/hferguh5tdeaccw/IMG_4352.JPG = (direct link) 73, Markus (DF6NM) From: Michael Sapp=20 Sent: Saturday, May 30, 2015 4:41 AM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Almost Stefan: Close, but no cigar..... local QRM..... https://www.dropbox.com/s/hferguh5tdeaccw/IMG_4352.JPG?dl=3D0 73 Mike wa3tts ----- Original Message -----=20 From: DK7FC=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, May 29, 2015 6:03 PM Subject: LF: Worse than false decodes... ------=_NextPart_000_000C_01D09AE5.9DFE6E70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Markus:  I do not think the QRM = signals are=20 spurious. I have built the W1VD preselector for 475~500 kHz range and = the=20 offending signals are still present when the preselector is used.  = Same=20 with the FZ-02 filter.  There are some commercial and retail shops = to my NE=20 about 300~400 meters away, possible that is the source.  However, = the=20 offending QRM signals are not consistent in frequency or strength from = one day=20 to the next.  QRM signals are not very strong, but strong enough to = interfere with a -27 to -30 SNR desired signal.   =
 
  I use a pair of crossed EWE = antennas to have=20 four-way selectable cardio patterns for NE, SW, SE, and NW directional=20 reception. If I switch to the NW direction, the QRM signals go away, but = then=20 directivity to DK7FC would be about 4~5dB down.  To the SW and SE=20 directions some QRM sources disappear, and other QRM sources = appear.  I may=20 try some phase steering between the two EWE antennas. It is an = ongoing=20 learning process. Random chance could always prevail, so I continue to = listen,=20 tinker, and occasionally even learn something ~:). 73,
 
Mike wa3tts
 
PS: I have received several  F5WK = wspr2=20 captures on 630m this last December....
 
htt= ps://www.dropbox.com/s/wkfcl9gfyac5nlm/F5WKMAP.JPG?dl=3D0
 
ht= tps://www.dropbox.com/s/fzox0bk492h20dq/IMG_4142.JPG?dl=3D0
----- Original Message ----- a
From:=20 Markus=20 Vester
Sent: Saturday, May 30, 2015 = 6:20=20 AM
Subject: Re: LF: Almost

Looks like Stefan ran = into a Loran=20 line... but wait, Loran is no longer there in North America, and = anyway=20 we're on MF not LF. Mike any idea what is causing those = spurs?
 
https://dl.dropboxusercontent.com/s/hferguh5tdeaccw/IMG_4352.JPG&nbs= p;(direct=20 link)
 
73, Markus (DF6NM)

From: Michael Sapp
Sent: Saturday, May 30, 2015 4:41 AM
To: rsgb_lf_group@blacksheep.org= =20
Subject: LF: Almost

Stefan: Close, but no cigar..... = local=20 QRM.....
 
ht= tps://www.dropbox.com/s/hferguh5tdeaccw/IMG_4352.JPG?dl=3D0
 
73 Mike wa3tts
----- Original Message -----
From:=20 DK7FC
To: rsgb_lf_group@blacksheep.org= =20
Sent: Friday, May 29, 2015 = 6:03=20 PM
Subject: LF: Worse than false = decodes...

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