X-GM-THRID: 1239586845933260748 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.78.172.10 with SMTP id u10cs295979hue; Mon, 18 Jun 2007 03:22:18 -0700 (PDT) Received: by 10.82.108.9 with SMTP id g9mr10904466buc.1182162138138; Mon, 18 Jun 2007 03:22:18 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id d23si27811nfh.2007.06.18.03.22.13; Mon, 18 Jun 2007 03:22:18 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1I0EIU-00041a-1O for rs_out_1@blacksheep.org; Mon, 18 Jun 2007 11:17:22 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1I0EIT-00041R-B4 for rsgb_lf_group@blacksheep.org; Mon, 18 Jun 2007 11:17:21 +0100 Received: from iasius.site5.com ([216.118.97.235]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1I0EIS-0004wr-1D for rsgb_lf_group@blacksheep.org; Mon, 18 Jun 2007 11:17:21 +0100 Received: from 62-249-237-217.no-dns-yet.enta.net ([62.249.237.217] helo=daddave) by iasius.site5.com with esmtp (Exim 4.63) (envelope-from ) id 1I0EIN-0000or-Co for rsgb_lf_group@blacksheep.org; Mon, 18 Jun 2007 06:17:16 -0400 From: "Michael Probert" To: Date: Mon, 18 Jun 2007 11:17:12 +0100 MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcexkdWz7k/3i6MJSPGWLvIFi+3+IA== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Antivirus-Scanner: This message has been scanned by ClamAV. X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - iasius.site5.com X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - ynysdawelcottages.com X-Source: X-Source-Args: X-Source-Dir: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Message-Id: Subject: LF: Broad band QRM-500khz Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01C7B19A.39BFCEA0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,HTML_MESSAGE 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 Status: O X-Status: X-Keywords: X-UID: 7140 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C7B19A.39BFCEA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hello all, Many thanks to all who responded to my troubles re the above. When my son and colleagues arrived for work ( They run an on line retail business) this morning and read the deluge of e mails they shut all systems down and we turned off the mains power supply. Fed underground. The phone lines are also fed underground but fixed about 25cms above ground for about 25m to the input socket. Using the main transmit antenna, 14mm top loaded vertical, and using a battery operated receiver the noise had disappeared completely. GI4DPE's beacon was S7. Only just detected it previously. I thought we had been through this procedure before but with old age and failing memory I now recall this was done in relation to 80 m noise some time ago. Switching power back on we then went through the laborious process of shutting down the large amount of equipment-Server and network systems and numerous PC terminals printers etc. 2 devices are causing the problem. Firstly-fairly minor, a power supply to an HP 750 printer. Produces a carrier across the band. Secondly-- an internal telephone system. 20 line - 4 in use, Panasonic KXT 61610BE-" Electronic Modular Switching System" The reason I associated the interference with broad band adsl was that using a portable RX placed anywhere near the telephone line produced massive QRN, even to the extent that I could detect it under ground. I can only conclude that somehow this wonderful Electronic Modular Switching System is feeding back down the phone lines. I am not knowledgeable enough to know if this is possible but it certainly seems the case. I am greatly indebted to all who offered solutions and secured the co operation of " workers" this end. I just hope some other gremlin does not appear again 73s Mike GW4HXO. PS Anyone know of an internal phone system -QRM free ? or a possible filter solution ? ------=_NextPart_000_0000_01C7B19A.39BFCEA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hello all,

 

Many thanks to all who responded to my troubles re = the above.

 

When my son and colleagues arrived for work ( They = run an on line retail business)  this morning and read the deluge of e mails = they shut all systems down and we turned off the mains power supply. Fed underground.

The phone lines are also fed underground but fixed = about 25cms above ground for about 25m to the input = socket.

Using the main transmit antenna, 14mm top loaded = vertical, and using a battery operated receiver the noise had disappeared = completely. GI4DPE’s beacon was S7. Only just detected it = previously.

 

I thought  we had been through this procedure = before but with old age and failing memory I now recall this was done in = relation to 80 m noise some time ago.

Switching power back on we then went through the = laborious process of shutting down the large amount of equipment—Server and network = systems and numerous PC terminals printers etc.

2 devices are causing the = problem.

 

Firstly-fairly minor, a power supply to an HP 750 = printer. Produces a carrier across the band.

 

Secondly-- an internal telephone system. 20 line - 4 = in use, Panasonic KXT 61610BE—“ Electronic Modular Switching = System”

The reason I associated the interference with broad = band adsl was that using a portable RX placed anywhere near the telephone = line produced massive QRN, even to the extent that I could detect it under = ground.

I can only conclude that somehow this wonderful = Electronic Modular Switching System is feeding back down the phone lines. I am not knowledgeable enough to know if this is possible but it certainly seems = the case.

 

I am greatly indebted  to all who offered = solutions and secured the co operation of “ workers” this = end.

 

I just hope some other gremlin does not appear = again

 

73s

 

Mike   GW4HXO.

 

PS Anyone know of an internal phone system –QRM = free ? or a possible filter solution ?

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