Return-Path: Received: from mtain-df08.r1000.mx.aol.com (mtain-df08.r1000.mx.aol.com [172.29.64.220]) by air-db06.mail.aol.com (v129.4) with ESMTP id MAILINDB062-86204d35b5b380; Tue, 18 Jan 2011 10:45:55 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 72E9E3800008D; Tue, 18 Jan 2011 10:45:54 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PfDk8-0001kU-My for rs_out_1@blacksheep.org; Tue, 18 Jan 2011 15:45:12 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PfDk8-0001kK-AX for rsgb_lf_group@blacksheep.org; Tue, 18 Jan 2011 15:45:12 +0000 Received: from mhost02h.leeds.ac.uk ([129.11.77.151]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PfDk6-0003lY-GI for rsgb_lf_group@blacksheep.org; Tue, 18 Jan 2011 15:45:12 +0000 Received: from APOLLO1.ds.leeds.ac.uk (apollo1.leeds.ac.uk [129.11.5.4]) by mhost02h.leeds.ac.uk (8.14.3/8.14.3) with ESMTP id p0IFhDfj021210 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT) for ; Tue, 18 Jan 2011 15:45:04 GMT Received: from HERMES8.ds.leeds.ac.uk ([fe80::39ce:23e:d0b5:7e24]) by APOLLO1.ds.leeds.ac.uk ([129.11.5.4]) with mapi; Tue, 18 Jan 2011 15:44:37 +0000 From: Chris Trayner To: "rsgb_lf_group@blacksheep.org" Date: Tue, 18 Jan 2011 15:44:36 +0000 Thread-Topic: LF: VLF Earth Mode does NOT need an NoV - official at last Thread-Index: Acu3JpwwqBSykfa5QsiG9awf3AyBYA== Message-ID: <8F2718D6-8C7C-4626-9385-933ECD4AECF5@leeds.ac.uk> References: In-Reply-To: Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, en-GB MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: VLF Earth Mode does NOT need an NoV - official at last Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=TO_ADDRESS_EQ_REAL 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: 3039ac1d40dc4d35b5b21686 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) Hi Roger, On 2011 Jan 18, at 15:11, Roger Lapthorn wrote: > Today I received this letter from OFCOM, which clarifies the legality of= operating so called "earth mode" (conduction/induction via the ground) ex= periments at frequencies below 9kHz in the UK. Note the sentence in Paul's= letter saying, "We would not normally issue NoVs for communications using= non-wireless telegraphy apparatus/stations i.e. where you rely only on= conducted emissions and where there are no intentional radiated emissions= .".=20 Maybe. Saying that they don't normally issue NoVs could mean that NoVs aren't nee= ded, or that they are needed but that OFCOM would rarely grant one. I suspect that their intended interpretation is what you say, and that the= y simply haven't written it unambiguously. I'm willing to say this in your= defence in court ;-) 73, Chris G4OKW ----------------------- Dr Chris Trayner School of Electronic & Electrical Engineering, The University of Leeds, Leeds LS2 9JT, United Kingdom Tel: +44 113 34 32053 Fax: +44 113 34 32032