Envelope-to: dave@picks.force9.co.uk Delivery-date: Tue, 05 Jul 2005 13:24:35 +0100 Received: by pih-mxcore17.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1DpmTb-0005Cs-0V for dave@picks.force9.co.uk; Tue, 05 Jul 2005 13:24:35 +0100 Received: from post.thorcom.com ([193.82.116.20]) by pih-mxcore17.plus.net with esmtp (PlusNet MXCore v2.00) id 1DpmTa-0005Cg-Sj for dave@picks.force9.co.uk; Tue, 05 Jul 2005 13:24:34 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DpmT8-00036f-De for rs_out_1@blacksheep.org; Tue, 05 Jul 2005 13:24:06 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DpmT7-00036W-Rn for rsgb_lf_group@blacksheep.org; Tue, 05 Jul 2005 13:24:05 +0100 Received: from imo-m23.mx.aol.com ([64.12.137.4]) by relay1.thorcom.net with esmtp (Exim 4.51) id 1DpmVv-0003of-1d for rsgb_lf_group@blacksheep.org; Tue, 05 Jul 2005 13:27:02 +0100 Received: from G0MRF@aol.com by imo-m23.mx.aol.com (mail_out_v38_r1.7.) id l.194.4229ba56 (4222) for ; Tue, 5 Jul 2005 08:23:53 -0400 (EDT) From: G0MRF@aol.com Message-ID: <194.4229ba56.2ffbd5d8@aol.com> Date: Tue, 5 Jul 2005 08:23:52 EDT To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 9.0 SE for Windows sub 5014 Subject: Re: LF: Re: 136kHz and Rugby Loran Content-Type: text/html; charset=windows-1252 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: by PlusNet MXCore (v2.00) Content-transfer-encoding: 8bit
In a message dated 05/07/2005 08:23:30 GMT Standard Time, word.factory@zetnet.co.uk writes:
At the next cave radio field meet in the UK, which is likely to be in September (but the location is not yet decided), it is hoped to make measurements of Loran signal strength on 87kHz and compare them with those in past years.  Cave rescue organisations which use Heyphones and Molephones are also being asked if they have noticed any difference in interference levels.

A note will also appear in the forthcoming CREG Journal alerting people to the tests.

73
John G3PAI
Hello John.
 
Thank you for that. I will be interested to know what if any deterioration in signal levels you measure. As a 'rescue service' any interference to your group would be considered more important than that caused to 'amateur radio'.
 
As most new installations like Rugby go through a well defined period of commissioning along the lines of:
 
Installation
Test
Assessment
Modification
Re-test
Hand over to operators
 
It may be the case that the Trinity House and Loran personnel will be aware that interference reported during the early stages is likely to be serious, while interference reported after 4 months of operation may not be that severe. Consequently, It's probably worth doing any monitoring sooner rather than later.
 
Pehaps if you have a cave rescue 'reflector' you could ask for any changes in reception to be reported at an earlier stage. Having said that it does appear that the Loran station is off at the weekends.......which is probably the most popular times for caving.
 
Many thanks
 
David