Return-Path: X-Spam-DCC: paranoid 1480; 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=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,SPF_PASS,UNPARSEABLE_RELAY 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 uAQC2Wbj000526 for ; Sat, 26 Nov 2016 13:02:32 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cAbck-00046m-M0 for rs_out_1@blacksheep.org; Sat, 26 Nov 2016 11:58:30 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cAbck-00046d-75 for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2016 11:58:30 +0000 Received: from nm39-vm9.bullet.mail.ir2.yahoo.com ([212.82.97.168]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cAbcg-0008PA-4g for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2016 11:58:29 +0000 X-DKIM-Result: Domain=yahoo.co.uk Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s2048; t=1480161505; bh=rxP5++3drAD+/areZIYV/eAhxE5a5D7ctVb2cf/pWe8=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=EawOUNtwfj9lm3Ut/F/3SKIrShTJ2ZJz3yJ6hE8eDRZiXnnbn4xtuTvcn4IgtlbFf8PSqaVhlrmkd/5xdeAgcInMJ6WBLhUYdEUVM0Q/2QtRSjReQckO4WDuWB85rXeRwa0WNvmYKs2YTIZ3oxLQ694eswtibKwwLeHCTW45Ly7WcAzBd3hmi5rEqnJ66BkVa+SyG/091SkNPty4BIi5AKoTag3X3A8d7EnyrIKMe0hzP3dRedZzvkeD8vQYNkreHpYq/0qWRj9DUXeWj3ehOssRX7zm5cRLdnMb+GMS38nBCUyOZHEUlySZv9AMW7AHucgspBn+bMv2stHLeevtUw== Received: from [212.82.98.126] by nm39.bullet.mail.ir2.yahoo.com with NNFMP; 26 Nov 2016 11:58:25 -0000 Received: from [212.82.98.75] by tm19.bullet.mail.ir2.yahoo.com with NNFMP; 26 Nov 2016 11:58:25 -0000 Received: from [127.0.0.1] by omp1012.mail.ir2.yahoo.com with NNFMP; 26 Nov 2016 11:58:25 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 105955.20494.bm@omp1012.mail.ir2.yahoo.com X-YMail-OSG: OZnputcVM1lx6TaHdAzecQFcY7yUPo2U1hqa5tgQ5mEpEWTYYAR.zqGZMv1JT9v Lo_hhzEpRBPHkYlu5E7pbKbFn5sMdsxGJPeLvvejckAMVRZW7wrkS.taYgjBDxzJBBLm0igzLKZz lhrss1v6fag3PG.Sh9gKwLNmyfMO2J96MOHrZ5aqzC_ITptCNo2eKvb_4Ea5DIKR6ho7ILfhUXbc WDj0PcTyglr0NsSw59XStZmcDpmpp3R3t8IVi2VTtLWpny1u_LrWgMVhX5npdCgpF_2TyquWqhwk cuWjGQrJGAZJAjYT3TDewEx1vA275VEkhAOxAv9NQH8EzWgkWfP1YP3kUdrPG1ZwoopwzkSYnc1V hEhMqTMR5YC.fAVJEjq_ZfmnNFzW.8vbhIZlSvs0EAtKrqUYyZQRmzH_4oo5D6vZ.nOAd31FPcXG R95aAMyGbDiLQ1YjGfPSn9IBYrU7.Q.Mk9loVH5MrpZwhvDfWA12rOiBSzYRJNMxkoNK9NKxaPxo aVq8d1kFfOGYl1etQ_b92frF9QzGN Received: from jws700052.mail.ir2.yahoo.com by sendmailws101.mail.ir2.yahoo.com; Sat, 26 Nov 2016 11:58:24 +0000; 1480161504.738 Date: Sat, 26 Nov 2016 11:58:24 +0000 (UTC) From: David Hine To: "rsgb_lf_group@blacksheep.org" Message-ID: <1814354706.1367099.1480161504262@mail.yahoo.com> In-Reply-To: <394829979.20161126101755@chriswilson.tv> References: <394829979.20161126101755@chriswilson.tv> MIME-Version: 1.0 X-Scan-Signature: fbdd513523001863775249cfaf215eac Subject: Re: LF: RFI noise at 144 kHz exactly Content-Type: multipart/alternative; boundary="----=_Part_1367098_371615773.1480161504260" 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 10.1.3.11 Content-Length: 6742 Status: O X-Status: X-Keywords: X-UID: 9558 ------=_Part_1367098_371615773.1480161504260 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Chris, The only way I can think to deal with this is if it also=C2=A0int= erferes=C2=A0with BBC R4 LW 198 kHz. Then you could complain to Ofcom to so= rt it out. I don't know that Ofcom would help (but they are supposed to as = R4 LW=C2=A0is a broadcast service), but it's worth a try, Best regards. Dav= id From: Chris Wilson To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, 26 November 2016, 10:17 Subject: LF: RFI noise at 144 kHz exactly =20 26 November 2016 I have been monitoring my noise on my receivers and the big issue is a constant, day and night, high level noise centred exactly on 144 kHz. Is=C2=A0 this=C2=A0 a frequency that is familiar to anyone? Googling it has= only brought=C2=A0 up=C2=A0 comments=C2=A0 of=C2=A0 some 20kHz solar inverters t= alking to their control=C2=A0 panels=C2=A0 down=C2=A0 the=C2=A0 mains wiring at 144 kHz, wi= th some chatter about=C2=A0 inverters=C2=A0 going=C2=A0 noisy=C2=A0 and=C2=A0 blanking=C2= =A0 out their own talk back frequency. My=C2=A0 next=C2=A0 door=C2=A0 but one neighbour has solar panels on his st= able roof, but=C2=A0 I=C2=A0 don't THINK they have an accumulator bank, they just feed= back into the national grid. we don't really get on too well so I am loathe to approach them unless I can be sure the noise is from there. There's also a huge, multi acre solar farm opened about 5 miles away. I would imagine some old geezer with noise near his beloved LF Ham band frequency would have little impact on its operation, so i hope it's not tat. Any ideas on what uses 144 kHz, and how to locate the source? Here's=C2=A0 a=C2=A0 screen=C2=A0 shot=C2=A0 of=C2=A0 it as it is at the mo= ment, but it doesn't change,=C2=A0 day=C2=A0 or=C2=A0 night,=C2=A0 and its amplitiude stays pret= ty constant, no turning=C2=A0 on=C2=A0 and off I have ever seen. My RX is on my TX aerial a= t the moment. http://www.chriswilson.tv/noise.jpg Thanks --=20 Best regards, Chris=C2=A0 2E0ILY=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 mailto:chris@chriswilson.tv My=C2=A0 =C2=A0 =C2=A0 =C2=A0 part=C2=A0 =C2=A0 =C2=A0 =C2=A0 time=C2=A0 = =C2=A0 =C2=A0 =C2=A0 LF=C2=A0 =C2=A0 =C2=A0 =C2=A0 grabber=C2=A0 =C2=A0 =C2= =A0 is=C2=A0 =C2=A0 =C2=A0 at http://www.chriswilson.tv/grabber.html =20 ------=_Part_1367098_371615773.1480161504260 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Chris, The only w= ay I can think to deal with this is if it also interferes with BB= C R4 LW 198 kHz. Then you could complain to Ofcom to sort it out. I don't k= now that Ofcom would help (but they are supposed to as R4 LW is a broa= dcast service), but it's worth a try, Best regards. David


From: Chris Wils= on <chris@chriswilson.tv>
T= o: rsgb_lf_group@blacksheep.org
Sent: Saturday, 26 November 2016, 10:17
Subject: LF: RFI noise at 144 kHz e= xactly

26 November 2016


I have been monitorin= g my noise on my receivers and the big issue is a
constant, day and nigh= t, high level noise centred exactly on 144 kHz.
Is  this  a fr= equency that is familiar to anyone? Googling it has only
brought  u= p  comments  of  some 20kHz solar inverters talking to their=
control  panels  down  the  mains wiring at 144 kHz= , with some chatter
about  inverters  going  noisy  = and  blanking  out their own talk back
frequency.

My&nb= sp; next  door  but one neighbour has solar panels on his stable = roof,
but  I  don't THINK they have an accumulator bank, they = just feed back
into the national grid. we don't really get on too well s= o I am loathe
to approach them unless I can be sure the noise is from th= ere.

There's also a huge, multi acre solar farm opened about 5 miles= away.
I would imagine some old geezer with noise near his beloved LF Ha= m
band frequency would have little impact on its operation, so i hopeit's not tat. Any ideas on what uses 144 kHz, and how to locate the
sou= rce?

Here's  a  screen  shot  of  it as it = is at the moment, but it doesn't
change,  day  or  night,=   and its amplitiude stays pretty constant, no
turning  on&nbs= p; and off I have ever seen. My RX is on my TX aerial at the
moment.
=
http:= //www.chriswilson.tv/noise.jpg

Thanks


--


= Best regards,
Chris  2E0ILY          &nbs= p;               mailto:chris@chri= swilson.tv

My        part    &nbs= p;   time        LF        gra= bber      is      at
http://www.chriswilson.t= v/grabber.html




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