Delivered-To: daveyxm@virginmedia.com Received: by 10.50.96.198 with SMTP id du6csp200915igb; Mon, 2 Dec 2013 14:50:34 -0800 (PST) X-Received: by 10.194.173.163 with SMTP id bl3mr56727282wjc.10.1386024633698; Mon, 02 Dec 2013 14:50:33 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id 18si21230526wjo.151.2013.12.02.14.50.32 for ; Mon, 02 Dec 2013 14:50:33 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Vnboz-0002ZL-TJ for rs_out_1@blacksheep.org; Mon, 02 Dec 2013 22:18:29 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vnboz-0002ZC-En for rsgb_lf_group@blacksheep.org; Mon, 02 Dec 2013 22:18:29 +0000 Received: from smtpout5.wanadoo.co.uk ([80.12.242.80] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Vnbox-0000GN-DM for rsgb_lf_group@blacksheep.org; Mon, 02 Dec 2013 22:18:28 +0000 Received: from AGB ([2.31.70.50]) by mwinf5d64 with ME id wmJP1m00H154tQJ03mJP6j; Mon, 02 Dec 2013 23:18:26 +0100 Message-ID: From: "Graham" To: References: <45EA2FEA-74E3-4AB1-A37B-868C7F526EF0@gmail.com> In-Reply-To: Date: Mon, 2 Dec 2013 22:18:23 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: You could even tailor it to letter frequencies, e.g. one short pulse for E, one long pulse for T, ... Ah , some sort of drifting oscillator ? the longer the 'on time' the more in moves would sound something like a Bird 'Chirping' could call it 'Chirp' ! [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.80 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 42bbe44aa18353e845a65753486d556c Subject: Re: LF: Article on VLF Content-Type: multipart/alternative; boundary="----=_NextPart_000_0045_01CEEFAC.6A3589B0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_20_30,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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: 2173 This is a multi-part message in MIME format. ------=_NextPart_000_0045_01CEEFAC.6A3589B0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable You could even tailor it to letter frequencies, e.g. one short pulse for = E, one long pulse for T, ... Ah , some sort of drifting oscillator ? the longer the 'on time' = the more in moves =20 would sound something like a Bird 'Chirping' could call it = 'Chirp' ! -------------------------------------------------- From: "Chris Trayner" Sent: Monday, December 02, 2013 10:09 PM To: Cc: "Robin Gape" Subject: Re: LF: Article on VLF >=20 > On 2013 Dec 2, at 18:31, John Rabson wrote: >=20 >> I have received the following request from G4AEE of the Cave Radio & = Electronics Group Journal editorial team: >>=20 >> =93[We wish] to include an article on what radio amateurs are doing = at VLF ... >> Another aspect would be the likely performance of highly compressed = speech. >=20 >=20 > Hey, I've got this great idea. > Rather than compress speech, why not render the message simpler? = Rather than the sounds you could just send the text, encoding the = letters in some way. You could turn the carrier on and off, say in short = or long bursts, with a group of such pulses to represent each letter. >=20 > You could even tailor it to letter frequencies, e.g. one short pulse = for E, one long pulse for T, ... >=20 > 73, > Chris > ----------------------- > 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 >=20 >=20 >=20 > ------=_NextPart_000_0045_01CEEFAC.6A3589B0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

You could even tailor it to letter = frequencies,=20 e.g. one short pulse for E, one long pulse for T, ...

Ah , = some =20 sort of  drifting  oscillator  ? the  longer = the  'on=20 time' the  more  in moves 
 
would  sound   something  like a Bird =20 'Chirping'         could  = call=20 it  'Chirp' =20 !

--------------------------------------------------
From: = "Chris=20 Trayner" <C.Trayner@leeds.ac.uk>
Sent: Monday, December 02, = 2013 10:09=20 PM
To: <rsgb_lf_group@blacksheep.org>
Cc: "Robin Gape"=20 <robingape@ukfsn.org>
Subject: Re: LF: Article on = VLF

>=20
> On 2013 Dec 2, at 18:31, John Rabson wrote:
> =
>> I have=20 received the following request from G4AEE of the Cave Radio & = Electronics=20 Group Journal editorial team:
>>
>> =93[We wish] to = include an=20 article on what radio amateurs are doing at VLF ...
>> Another = aspect=20 would be the likely performance of highly compressed speech.
> =
>=20
> Hey, I've got this great idea.
> Rather than compress = speech, why=20 not render the message simpler? Rather than the sounds you could just = send the=20 text, encoding the letters in some way. You could turn the carrier on = and off,=20 say in short or long bursts, with a group of such pulses to represent = each=20 letter.
>
> You could even tailor it to letter frequencies, = e.g.=20 one short pulse for E, one long pulse for T, ...
>
> = 73,
>=20 Chris
> -----------------------
> Dr Chris Trayner
> = School of=20 Electronic & Electrical Engineering,
> The University of=20 Leeds,
> Leeds LS2 9JT, United Kingdom
> Tel: +44 113 34=20 32053
> Fax: +44 113 34 32032
>
>
>=20
>
------=_NextPart_000_0045_01CEEFAC.6A3589B0--