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=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,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 tAI8C3tG000324 for ; Wed, 18 Nov 2015 09:12:03 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZyxnJ-0003sn-95 for rs_out_1@blacksheep.org; Wed, 18 Nov 2015 08:08:45 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZyxnI-0003se-Uo for rsgb_lf_group@blacksheep.org; Wed, 18 Nov 2015 08:08:44 +0000 Received: from mail-wm0-f43.google.com ([74.125.82.43]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1ZyxmJ-0001dW-BA for rsgb_lf_group@blacksheep.org; Wed, 18 Nov 2015 08:08:43 +0000 Received: by wmww144 with SMTP id w144so60218743wmw.0 for ; Wed, 18 Nov 2015 00:07:29 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=6+a3ppDHIrpPTBOtwzdYILmjLvSCWPOKaBDtTgooHDs=; b=pHXI+v1JDDwiTB338id1FG2VdVSszEoZ7obqda08kf+3PK60gv+Vq8eRJWf1fc86UG /1C4OhHA9ED5B4kuJA/vbw4NGTKYhEZhOWgNzArb38RtVWjlQ4sFvojnfrjMPMyyEADF 35GO4kaypd2i8XobaK89Wctds0JRSv1s6BG6oztT7mC9DL6R1ubVwglFeHXL477trKaX OVo5gPYsBog+Ghj0ejLv6Cu2eQZBfbjdzeQABS66IIcsDerkQ6+znyvIv76sKFdoyH5L Q2T/zRHMpo/Of7PJ3NkJ1G/DKO8qIp5yahDTRgnBiG7+LNBh5CtzJNFgHwxqWaol4pWU DhFQ== MIME-Version: 1.0 X-Received: by 10.194.185.6 with SMTP id ey6mr281722wjc.42.1447834048876; Wed, 18 Nov 2015 00:07:28 -0800 (PST) Received: by 10.28.130.139 with HTTP; Wed, 18 Nov 2015 00:07:28 -0800 (PST) In-Reply-To: References: Date: Wed, 18 Nov 2015 08:07:28 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 1908b49407fc556987226b536cc4bad0 Subject: Re: LF: 137.780 dash's Content-Type: multipart/alternative; boundary=047d7bea40b62d58440524cc225c 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: 5137 --047d7bea40b62d58440524cc225c Content-Type: text/plain; charset=UTF-8 If fact, its as clear as anything on DK7FC's plot where the strong signal allows the spread from the BPSK sequence to be seen http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html Andy On 18 November 2015 at 07:21, Andy Talbot wrote: > I think you are seeing my EbNaut transmission using 0.5s symbols. The > transmission itself is a little under 6 minutes long, and repeats every 10 > minutes, so there is a 4 minute period of unmodulated carrier every 10 > minutes. . > > That appears to be roughly what your grabber plots are showing. The > energy is spread over 2Hz while it is keying, so in a narrow bandwidth FFT > would appear to reduce in power > > The frequency of my transmission is very accurate. Overnight the DOCXO > output, divided down to 1Hz, shifted, on average over the entire 10 hour > period, just 2us compared with GPS. That corresponds to a mean frequency > accuracy of the 10Mhz reference of 6*10^-11 - which is pretty good for a > free running source.. It will shift a bit more when the central heating > ramps the house up to 20C starting from 0600. > > On 18 November 2015 at 02:29, Roman RW3ADB > wrote: > >> Hello genossen LFers! >> >> Who is it on 137.780 from England with 'dash's' similar signal? >> Also are visible on EW6BN grab some time: >> >> http://136.su/index.php/topic,18.msg13738.html#msg13738 >> >> 73! >> Roman >> >> Personal email: rw3adb@ya.ru >> I use rw3adb.rsgb.lf@gmail.com for LF group only. >> > > --047d7bea40b62d58440524cc225c Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
If fact, its as clear as anything on DK7FC's plot= where the strong signal allows the spread from the BPSK sequence to be see= n

Andy

On 18 November 2015 at 07:21, A= ndy Talbot <andy.g4jnt@gmail.com> wrote:
I think you are seeing my EbNaut tr= ansmission using 0.5s symbols.=C2=A0=C2=A0=C2=A0 The transmission itself is= a little under 6 minutes long, and repeats every 10 minutes, so there is= =C2=A0a=C2=A04 minute period=C2=A0of unmodulated carrier every 10 minutes.= =C2=A0=C2=A0 .

That appears to be roughly what you= r grabber plots=C2=A0are showing.=C2=A0 The energy is spread over 2Hz while= it is keying, so in a narrow bandwidth FFT would appear to reduce in power=

The frequency of my transmission is very accurate= .=C2=A0 Overnight the DOCXO output, divided down to 1Hz, shifted, on averag= e over the entire 10 hour period, just 2us compared with GPS.=C2=A0=C2=A0 T= hat corresponds to a mean frequency accuracy of the 10Mhz reference of 6*10= ^-11=C2=A0 - which is pretty good for a free running source..=C2=A0=C2=A0 I= t will shift a bit more when the central heating ramps the house up to 20C = starting from 0600.

On 18 November 2015 at 02:29, Roman RW3ADB = <rw3adb.rs= gb.lf@gmail.com> wrote:
= Hello genossen LFers!

Who is it on 137.780 from England = with 'dash's' similar signal?
Also are visible on EW6= BN grab some time:


73!
Roman

Personal email: rw3adb@ya.ru
I use rw3adb.rsgb.lf@gmail.com=C2=A0for LF group onl= y.


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