Return-Path: Received: from mtain-ma06.r1000.mx.aol.com (mtain-ma06.r1000.mx.aol.com [172.29.96.14]) by air-me07.mail.aol.com (v129.4) with ESMTP id MAILINME071-8bb84d3ffa021fb; Wed, 26 Jan 2011 05:40:02 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1C73538000084; Wed, 26 Jan 2011 05:40:00 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pi2m2-00076m-Vi for rs_out_1@blacksheep.org; Wed, 26 Jan 2011 10:38:50 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pi2m2-00076d-ET for rsgb_lf_group@blacksheep.org; Wed, 26 Jan 2011 10:38:50 +0000 Received: from mail-iw0-f171.google.com ([209.85.214.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pi2lz-0003JW-OQ for rsgb_lf_group@blacksheep.org; Wed, 26 Jan 2011 10:38:50 +0000 Received: by iwn2 with SMTP id 2so773057iwn.16 for ; Wed, 26 Jan 2011 02:38:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=VctkeJ2aQABCRMVGHARBeByanGG5M26AYsnasAZrmUQ=; b=pCN9oH6TcsxxxE23f2mggxbYKFieqDVU9ByzKeyixUFibujdjZWwq/pC8Y9tLt3lax F6mBIxknv6WvWfmBnw4I55765pcvOv23HF6nYd7h2omhbMaMgJNOVtNArjeo5/ose9bx bo72tb+eYohrlyG3Q3wJ2Ev4eG20mf5hDMbiU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=ZWLPn8rGsOTQA4FQuoNt0bnmY9MM/p0fYeQHVUxpOzsDMaTQLSxjKIS1R2EbPCdZAq 4MP5qKOhvTSvcOr16hrpbNCJfYV1YMJIr2cs8pgKc2iCoiaO6NhmZW/x5DTsykry+1so aNVd12SZhwdsNF+k8eqx6fuwBRs3YUxCbJCWk= MIME-Version: 1.0 Received: by 10.42.178.195 with SMTP id bn3mr158883icb.493.1296038326412; Wed, 26 Jan 2011 02:38:46 -0800 (PST) Received: by 10.42.241.73 with HTTP; Wed, 26 Jan 2011 02:38:46 -0800 (PST) Date: Wed, 26 Jan 2011 10:38:46 +0000 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=disabled,HTML_IMAGE_RATIO_02=0.192,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: LF: A 73kHz allocation again? Content-Type: multipart/alternative; boundary=90e6ba6e864c0fa4a6049abd7037 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m025.2 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d600e4d3ffa00290a X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --90e6ba6e864c0fa4a6049abd7037 Content-Type: text/plain; charset=ISO-8859-1 All, Looking at recent plots and listed VLF/LF stations active there would appear to be room in the 70-74kHz region for some amateur activity in Europe without risk to other services. I wonder, seriously, if we asked OFCOM (and other authorities in Europe) for NoV access to the 73kHz band whether it would be granted. They were helpful and supportive with regard to 8.7-9.1kHz NoVs and seem to accept that genuine research activities warrant support and encouragement. After all, only a handful of people would be interested. With the progress in weak signal work since the 73kHz band was last available in the UK and with the new experiences of some at 8.97kHz (and 136kHz), there is surely a good case to support this as an experimental allocation via a NoV. I'd be keen to try earth mode and radiated tests (locally) at 73kHz. What do people think? Should I ask OFCOM like I did for the Dreamer's Band NoV and see what happens or should this be via the RSGB? 73s Roger G3XBM -- g3xbm-qrp.blogspot.com/ www.g3xbm.co.uk www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 <#> <#> <#> <#> --90e6ba6e864c0fa4a6049abd7037 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable All,

Looking at recent plots and listed VLF/LF stations active ther= e would appear to be room in the 70-74kHz region for some amateur activity= in Europe without risk to other services. I wonder, seriously, if we aske= d OFCOM (and other authorities in Europe) for NoV access to the 73kHz band= whether it would be granted. They were helpful and supportive with regard= to 8.7-9.1kHz NoVs and seem to accept that genuine research activities wa= rrant support and encouragement. After all, only a handful of people would= be interested.

With the progress in weak signal work since the 73kHz band was last av= ailable in the UK and with the new experiences of some at 8.97kHz (and 136= kHz), there is surely a good case to support this as an experimental alloc= ation via a NoV. I'd be keen to try earth mode and radiated tests (loc= ally) at 73kHz.

What do people think? Should I ask OFCOM like I did for the Dreamer= 9;s Band NoV and see what happens or should this be via the RSGB?

7= 3s
Roger G3XBM

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