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=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,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 uASCa8Xs005688 for ; Mon, 28 Nov 2016 13:36:08 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cBL5A-0002q5-N6 for rs_out_1@blacksheep.org; Mon, 28 Nov 2016 12:30:52 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cBL59-0002pw-Uh for rsgb_lf_group@blacksheep.org; Mon, 28 Nov 2016 12:30:51 +0000 Received: from nm48.bullet.mail.ne1.yahoo.com ([98.138.120.55]) by relay1.thorcom.net with esmtps (TLSv1:ECDHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1cBL51-0000wR-7z for rsgb_lf_group@blacksheep.org; Mon, 28 Nov 2016 12:30:50 +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=1480336241; bh=dWFLbAoww6Mwz9SkCI84K1/Tx8GZJLG7s9veZeMvuVk=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=XTkykuDXBpIkYJFtbxcS0Mty08kUgWoql/Xkfat0Arc51wOc6zmWyAAfz3UvZbkxl4HzuAIpu/a7CPIly6OHPISF3dRLnQzjF4W3wMvSdU1Mu0ic+A3BVDSydAyusGOd6g9lwhK8hNL3z897Sm/tbW6irIbi4TtU/MB5c3SzEBgvZtHz9ZkoqJwTXDIpVydgM5uEkmPCv6VACuYyTPDndfBN4nw6JL9qCOoP4m1TsSP9x9gPqf7isHJ+EJRh2c1cK1RZ/7dYKlF1Z4B1Bu2eKcS6C7002CLV3+299W6Ezt2vKi2VUw8p4akyrx2rKpAlSXvHhrvih7emMwhn9kE+pA== Received: from [127.0.0.1] by nm48.bullet.mail.ne1.yahoo.com with NNFMP; 28 Nov 2016 12:30:41 -0000 Received: from [98.138.101.131] by nm48.bullet.mail.ne1.yahoo.com with NNFMP; 28 Nov 2016 12:27:55 -0000 Received: from [212.82.98.58] by tm19.bullet.mail.ne1.yahoo.com with NNFMP; 28 Nov 2016 12:27:54 -0000 Received: from [212.82.98.91] by tm11.bullet.mail.ir2.yahoo.com with NNFMP; 28 Nov 2016 12:27:54 -0000 Received: from [127.0.0.1] by omp1028.mail.ir2.yahoo.com with NNFMP; 28 Nov 2016 12:27:54 -0000 X-Yahoo-Newman-Property: ymail-4 X-Yahoo-Newman-Id: 720710.59021.bm@omp1028.mail.ir2.yahoo.com X-YMail-OSG: H1lROnkVRDtargwMSXW9qZZHtSQQ8K7RlcNFTmsYdt9vLQ-- Received: from jws700074.mail.ir2.yahoo.com by sendmailws101.mail.ir2.yahoo.com; Mon, 28 Nov 2016 12:27:54 +0000; 1480336074.326 Date: Mon, 28 Nov 2016 12:27:48 +0000 (UTC) From: David Hine To: "rsgb_lf_group@blacksheep.org" Message-ID: <990656071.3044477.1480336068331@mail.yahoo.com> In-Reply-To: References: <394829979.20161126101755@chriswilson.tv> <6B2EB28C-A17D-484F-A20B-856BFAFCE4B4@gmail.com> MIME-Version: 1.0 X-Scan-Signature: 80dfd4418e586cee7526d670ae10acbc Subject: Re: LF: RFI noise at 144 kHz exactly Content-Type: multipart/alternative; boundary="----=_Part_3044476_1502471673.1480336068329" 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: 11562 Status: O X-Status: X-Keywords: X-UID: 9597 ------=_Part_3044476_1502471673.1480336068329 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, I worked on large megawatt=C2=A0Military VLF TX's, and its certainly no= t that -it's probably some unfiltered cheap=C2=A0SMPS (TV on standby or pho= ne charger or landline phone / charger=C2=A0power unit?) -very annoying, bu= t I bet it's within=C2=A0a few yards from you. Tried a 'sniffer' RX? -perha= ps a Long Wave=C2=A0 domestic portable, Regards, David From: Alan Melia To: rsgb_lf_group@blacksheep.org=20 Sent: Monday, 28 November 2016, 11:44 Subject: Re: LF: RFI noise at 144 kHz exactly =20 Hi John yes there are Mil stations that come up sporadically with RTTY or= =20 GMSK. They are fairly narrow < 100Hz but the splurge that Chris reported=20 seemed much wider....more like interference than a genuine signal. Alan ----- Original Message -----=20 From: "John Rabson" To: "John Rabson" Cc: Sent: Monday, November 28, 2016 10:52 AM Subject: Re: LF: RFI noise at 144 kHz exactly Alan, Thank you for your suggestions regarding tracking down the QRM, but this=20 morning the signal on 145 kHz is no longer there. What I have noticed is=20 that there is now an RTTY signal on 147 kHz about the same strength here as= =20 longwave Radio 4. I shall continue monitoring while recommissioning my 136 kHz softrock. John F5VLF > On 27 Nov 2016, at 11:22, John Rabson wrote: > > I have just resumed monitoring 135 to 198 kHz and have noticed a fairly= =20 > strong broad and constant signal on about 145 kHz which was not there las= t=20 > winter. It sounds rather like LORAN A (not C) but without the selective= =20 > fading effects we used to get on 1.9 MHz. It appears to come from either= =20 > north-east or south-west of my location in central Burgundy, but I have= =20 > not yet managed to get a cross bearing. > > John F5VLF > >> On 26 Nov 2016, at 11:17, Chris Wilson wrote: >> >> 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 inverter= s talking to their >> control=C2=A0 panels=C2=A0 down=C2=A0 the=C2=A0 mains wiring at 144 kHz,= with 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= stable roof, >> but=C2=A0 I=C2=A0 don't THINK they have an accumulator bank, they just f= eed 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= moment, but it doesn't >> change,=C2=A0 day=C2=A0 or=C2=A0 night,=C2=A0 and its amplitiude stays p= retty constant, no >> turning=C2=A0 on=C2=A0 and off I have ever seen. My RX is on my TX aeria= l at 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 >> >> > > john.rabson07@gmail.com > > Researching history of RABSON, BLACKSHAW, GAUNTLETT, VERLANDER and=20 > ROBSONNE > > > > john.rabson07@gmail.com Researching history of RABSON, BLACKSHAW, GAUNTLETT, VERLANDER and ROBSONNE =20 ------=_Part_3044476_1502471673.1480336068329 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi, I worked on large megawatt&nbs= p;Military VLF TX's, and its certainly not that -it's probably some unfilte= red cheap SMPS (TV on standby or phone charger or landline phone / cha= rger power unit?) -very annoying, but I bet it's within a few yar= ds from you. Tried a 'sniffer' RX? -perhaps a Long Wave  domestic port= able, Regards, David


From: Alan Melia <alan.melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org=
Sent: Monday, 28 Nov= ember 2016, 11:44
Subject:= Re: LF: RFI noise at 144 kHz exactly

Hi John yes the= re are Mil stations that come up sporadically with RTTY or
GMSK. They a= re fairly narrow < 100Hz but the splurge that Chris reported
seemed = much wider....more like interference than a genuine signal.

Alan
=
----- Original Message -----
From: "John Rabson" <joh= n.rabson07@gmail.com>
To: "John Rabson" <john.rabso= n07@gmail.com>
Cc: <rsgb_lf_group@blacksh= eep.org>
Sent: Monday, November 28, 2016 10:52 AM
Subject: Re:= LF: RFI noise at 144 kHz exactly


Alan,

Thank you for you= r suggestions regarding tracking down the QRM, but this
morning the sig= nal on 145 kHz is no longer there. What I have noticed is
that there is= now an RTTY signal on 147 kHz about the same strength here as
longwave= Radio 4.

I shall continue monitoring while recommissioning my 136 k= Hz softrock.

John F5VLF
> On 27 Nov 2016, at 11:22, John Rabso= n <john.rabson07@gmail.com> wrote:
>
> I h= ave just resumed monitoring 135 to 198 kHz and have noticed a fairly
&g= t; strong broad and constant signal on about 145 kHz which was not there la= st
> winter. It sounds rather like LORAN A (not C) but without the s= elective
> fading effects we used to get on 1.9 MHz. It appears to c= ome from either
> north-east or south-west of my location in central= Burgundy, but I have
> not yet managed to get a cross bearing.
&= gt;
> John F5VLF
>
>> On 26 Nov 2016, at 11:17, Chris = Wilson <chris@chriswilson.tv> wrote:
>>
>>= 26 November 2016
>>
>>
>> I have been monitorin= g my noise on my receivers and the big issue is a
>> constant, day= and night, high level noise centred exactly on 144 kHz.
>> Is&nbs= p; this  a frequency that is familiar to anyone? Googling it has only<= br>>> brought  up  comments  of  some 20kHz solar= inverters talking to their
>> control  panels  down&nbs= p; the  mains wiring at 144 kHz, with some chatter
>> about&n= bsp; inverters  going  noisy  and  blanking  out t= heir own talk back
>> frequency.
>>
>> My  = 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 so I am loathe
>> to approach them unless I can be su= re the noise is from there.
>>
>> There's also a huge, mu= lti acre solar farm opened about 5 miles away.
>> I would imagine = some old geezer with noise near his beloved LF Ham
>> band frequen= cy would have little impact on its operation, so i hope
>> it's no= t tat. Any ideas on what uses 144 kHz, and how to locate the
>> so= urce?
>>
>> 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  and off I have ever seen. My RX is o= n my TX aerial at the
>> moment.
>>
>> http://www.chris= wilson.tv/noise.jpg
>>
>> Thanks
>>
>&= gt;
>> --
>>
>>
>> Best regards,
&g= t;> Chris  2E0ILY              &= nbsp;           mailto:chris@chriswilson.tv<= /a>
>>
>> My        part   =     time        LF       = ; grabber      is      at
>> http://www.= chriswilson.tv/grabber.html
>>
>>
>
> john.rabson07@gmail.com
>
> Researching history of = RABSON, BLACKSHAW, GAUNTLETT, VERLANDER and
> ROBSONNE
>
&g= t;
>
>

john.rabson07@gmail.com

Res= earching history of RABSON, BLACKSHAW, GAUNTLETT, VERLANDER and ROBSONNE







<= /html> ------=_Part_3044476_1502471673.1480336068329--