Return-Path: Received: (qmail 9236 invoked from network); 5 Jul 2004 13:07:59 -0000 Received: from unknown (HELO ptb-mxscan03.plus.net) (212.159.14.237) by ptb-mailstore04.plus.net with SMTP; 5 Jul 2004 13:07:59 -0000 Received: (qmail 27823 invoked from network); 5 Jul 2004 13:07:58 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore03.plus.net (212.159.14.217) by ptb-mxscan03.plus.net with SMTP; 5 Jul 2004 13:07:55 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1BhTCN-0006km-1E for dave@picks.force9.co.uk; Mon, 05 Jul 2004 14:07:55 +0100 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BhTBS-0003Hg-MI for rs_out_1@blacksheep.org; Mon, 05 Jul 2004 14:06:58 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BhTBR-0003HX-Qu for rsgb_lf_group@blacksheep.org; Mon, 05 Jul 2004 14:06:57 +0100 Received: from hestia.herts.ac.uk ([147.197.200.9]) by relay.salmark.net with esmtp (Exim 4.24) id 1BhZlZ-0004go-8T for rsgb_lf_group@blacksheep.org; Mon, 05 Jul 2004 21:08:41 +0100 X-Fake-Domain: altair Received: from altair ([147.197.200.45] helo=altair.herts.ac.uk) by hestia.herts.ac.uk with esmtp (Exim 3.22 #1) id 1BhTAy-0000un-00 for rsgb_lf_group@blacksheep.org; Mon, 05 Jul 2004 14:06:28 +0100 X-No-DNS-For: 147.197.164.230 Received: from [147.197.164.230] (helo=JamesMorrits) by altair.herts.ac.uk with esmtp (Exim 3.36 #1) id 1BhTAx-00052Q-00 for rsgb_lf_group@blacksheep.org; Mon, 05 Jul 2004 14:06:27 +0100 From: "James Moritz" To: rsgb_lf_group@blacksheep.org Date: Mon, 5 Jul 2004 14:06:22 +0100 Message-ID: MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-UH-MailScanner: No Virus detected X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=no,HTML_50_60=0.183,HTML_FONTCOLOR_UNKNOWN=0.1,HTML_MESSAGE=0.001 Subject: LF: RE: 2200m webpage updated Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60, HTML_FONTCOLOR_UNKNOWN,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 X-PN-SPAMFiltered: yes X-Spam-Rating: 1 Content-transfer-encoding: 8bit

Dear Scott,

Very interesting to see the pictures of CKN. I’m sure the two big masts must be the LF antennas – but some of the smaller masts are carrying fixed and rotatable (the ones with 3 horizontal booms at the top) HF log-periodic arrays. For descriptions of something similar, see the data sheets at

http://www.tcibr.com/NewFiles/hfbroadants.html

http://www.antennaproducts.com/

I think the rotatable arrays are these:

http://www.antennaproducts.com/89photo.htm

Never seen those “Hula Hoops” before though…

I have been looking at the 76.2kHz and 133.1kHz frequencies a bit – unfortunately, 133.1 has quite a lot of QRM from sidebands of the “Datatrack” beacons centered on slightly higher frequency, so a fairly strong signal would be needed to be detectable. 76.2kHz seems to be in the clear though, but nothing seen so far. BTW, does anybody have any info about the Datatrack transmitters? There seem to be a number working on a common frequency – I can’t get a null with a loop antenna.

Cheers, Jim Moritz

73 de M0BMU

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Scott Tilley
Sent: 05 July 2004 08:22
To: rsgb_lf_group@blacksheep.org
Subject: LF: 2200m webpage updated

I've updated my 2200m section to include some info on a new DDS by SM6LKM and some images of naval radio site 'CKN'...

73

Scott

Check the status of radio beacon 'TIL' at:
www.scottboxx.com/radio