Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 614E6380000E2; Tue, 19 Mar 2013 17:39:26 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UI3gJ-0003GZ-6n for rs_out_1@blacksheep.org; Tue, 19 Mar 2013 21:02:51 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UI3gI-0003GQ-GJ for rsgb_lf_group@blacksheep.org; Tue, 19 Mar 2013 21:02:50 +0000 Received: from smtpa1.mediabeam.com ([194.25.41.13] helo=smtpa2.mediabeam.com) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1UI3gE-0007hx-QH for rsgb_lf_group@blacksheep.org; Tue, 19 Mar 2013 21:02:49 +0000 Received: from IMAP1 (balancer7.mediabeam.com [10.100.1.80]) by smtpa2.mediabeam.com (8.13.8/8.13.1) with ESMTP id r2JL2Ppr027507 for ; Tue, 19 Mar 2013 22:02:25 +0100 Date: Tue, 19 Mar 2013 22:02:23 +0100 From: uwe-jannsen@kabelmail.de To: rsgb_lf_group@blacksheep.org Message-ID: X-Priority: 3 (Normal) MIME-Version: 1.0 X-Spam-Score: -0.7 (/) 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: thanks Laurtence, the WX here is not so pro VLF TXing: it snows and rains without interruption. kill that cable amp. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [194.25.41.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 3f96c9ff152a6a60cc2344b4cc7e7dd2 Subject: Re: RE: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et al; Content-Type: multipart/alternative; boundary="----1C00C86B62F0429482CDA2E999B712C5" 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_MESSAGE,NO_REAL_NAME, PRIORITY_NO_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 x-aol-global-disposition: G x-aol-sid: 3039ac1d4ad15148db0d147e X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------1C00C86B62F0429482CDA2E999B712C5 Content-type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable thanks Laurtence, the WX here is not so pro VLF TXing: it snows and rains without interr= uption=2E kill that cable amp=2E GL Uwe/dj8wx Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 18=2E03=2E2013 17:22 An: rsgb_lf_group@blacksheep=2Eorg Betreff: RE: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et= al; Grabber on line Uwe - we have some qrm from a local cable company which= Im working on - looks like one of the Cable amps up the road is oscill= ating at 19KHz - ouch - look at my wideband snapper and youll see what = I mean - 40dBm - but it looks clear on 8970 - running now 238uHz Bucket bin - dang VL= F reference station keeps on going off and GPS twinking up here with al= l this Aurorally stuff=2E=2E=2E=2E We are now at 12 day 12 hours night increasing at 5 mins 46 secs per d= ay=2E=2E=2E=2Ebut still -28C last night Laurence KL 1 X Date: Mon, 18 Mar 2013 14:18:53 +0100 From: uwe-jannsen@kabelmail=2Ede To: rsgb_lf_group@blacksheep=2Eorg Subject: Re: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et= al; Hi =A0Laurence, last days I made some tests on 8970Hz, mode CASTLE, shift 0,002Hz tran= smitting the letter =93W=94 in 5000sec/dot=2E Pse see: http://abelian=2Eorg/vlf/fbins=2Eshtml#p=3D1363442400&b=3D080&s=3Dsp the signs could be seen on all grabbers I know=2E Now I changed the speed and the shift to 10000sec/dot and 0,001Hz, I`ll give the PA some coal extra=2E =A0thanks Laurtence,

the WX here is not so pro VLF TXing: it snows and rains without interru= ption=2E

kill that cable amp=2E

GL
Uwe/dj8wx
Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 18=2E03=2E2013 17:22
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: RE: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et= al;

Grabber on line Uwe - we have some qrm from a local ca= ble company which Im working on - looks like one of the Cable amps up t= he road is oscillating at 19KHz - ouch - look at my wideband snapper an= d youll see what I mean - 40dBm

- but it looks clear on 8970 - running now 238uHz Bucket bin - dang VLF= reference station keeps on going off and GPS twinking up here with all= this Aurorally stuff=2E=2E=2E=2E

We are now at 12 day 12 hours night increasing at 5 mins 46 secs per da= y=2E=2E=2E=2Ebut still -28C last night

Laurence KL 1 X



Date: Mon, 18 Mar 2013 14:18:53 +0100
From: uwe-jannsen@kabelmail=2Ede
To: rsgb_lf_group@blacksheep=2Eorg
Subject: Re: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et= al;

Hi  Laurence,
last days I made some tests on 8970Hz, mode <= span>CASTLE, shift 0,002Hz transmitting the letter “= W” in 5000sec/dot=2E Pse see:
http://abelian=2Eorg/vlf/fbins=2Eshtml#p=3D1363442400&b=3D080&s= =3Dsp
the signs could be seen on all grabbers I know=2E<= /strong>
Now I changed the speed and the shift to 10000sec/dot and= 0,001Hz,
I`ll give the PA some coal extra=2E
 <VLF
<If anyone wants to spark up on 8970Hz again from Eu Im looking at s= low QRSS's and shoving the results out on the web site=2E
<The s/n noise is now vastly improved down there too using the E fie= ld L400B=2E
 pse, Laurence, let us have an other try=2E
GL
Uwe/dj8wx/jo43sv
Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 02=2E03=2E2013 09:00
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: LF: Decca 5501 mod, conditions, noise mitigation, 8970 et al;=

Decca 5501 mod -

I think I recall that the late G3AQC, maybe others  had a clever w= ay of installing mods allowing it to be "switched"  between 137 an= d 500 - if anyone has any details Id like to hear or see them - with th= anks=2E

Conditions -

Well - its been a very poor LF season up here to date - with only a cou= ple of Eu openings, obviously my stars havent been aligned, or moreover= the Coronal holes have been=2E  At least the nights are getting s= horter

 - HF conditions are very poor too at this time=2E Still its good = X country skiing weather and the Aurora are pretty=2E

VLF

If anyone wants to spark up on 8970Hz again from Eu Im looking at slow = QRSS's and shoving the results out on the web site=2E

 The s/n noise is now vastly improved down there too using the E f= ield L400B=2E

QRM

I spent yesterday after noon with our local power utility linesman trac= king down a noise source(s) pulsing away at 9Khz prf from 50kHz to 5MHz= - traced one to a house about 0=2E4 miles from here, and I have a seco= nd one with the same sort of signature which is proving more difficult = to DF=2E  I havent approached the owners yet, but heck sitting out= side the offenders house on the road in the car with the SDRIQ and anot= her L400B magmount the pulses were stronger than local NDB and some MW = broadcast signals and a huge amount being re radiated from the undergro= und power lines - so you can imagine something fairly meaty shoving out= this do doo, especially as I can hear the same signatures (but maybe n= ot the same source) on overhead HT power lines some 5 miles away - Im g= uessing home automation, but it might be a wayward lighting switch or b= lender :-) =2E If your interested theres a visual capture of the interf= erence source covering the MF band at

http://k= l7uk=2Ecom/Screen7=2Epng

or on WSPR water fall   http://kl7uk=2Ecom/MEA1=2Epng


Cheers





Laurence KL 1 X  WE2 XPQ
------1C00C86B62F0429482CDA2E999B712C5--