Return-Path: Received: from mtain-md04.r1000.mx.aol.com (mtain-md04.r1000.mx.aol.com [172.29.96.88]) by air-df03.mail.aol.com (v129.4) with ESMTP id MAILINDF033-5eec4c7d6d542e0; Tue, 31 Aug 2010 17:00:04 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-md04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8277038000088; Tue, 31 Aug 2010 17:00:02 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OqXvB-00005S-1n for rs_out_1@blacksheep.org; Tue, 31 Aug 2010 21:59:09 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OqXvA-00005I-If for rsgb_lf_group@blacksheep.org; Tue, 31 Aug 2010 21:59:08 +0100 Received: from smtp7.freeserve.com ([80.12.242.2] helo=smtp6.freeserve.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OqXt9-0003cx-0X for rsgb_lf_group@blacksheep.org; Tue, 31 Aug 2010 21:59:03 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3j02.me.freeserve.com (SMTP Server) with ESMTP id 8320B3000097 for ; Tue, 31 Aug 2010 22:54:35 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3j02.me.freeserve.com (SMTP Server) with ESMTP id 76E5830000B9 for ; Tue, 31 Aug 2010 22:54:35 +0200 (CEST) Received: from AGB (unknown [91.110.90.106]) by mwinf3j02.me.freeserve.com (SMTP Server) with SMTP id 293863000097 for ; Tue, 31 Aug 2010 22:54:35 +0200 (CEST) X-ME-UUID: 20100831205435168.293863000097@mwinf3j02.me.freeserve.com Message-ID: <529A1140DBC246E18328E856CC738747@AGB> From: "Graham" To: References: <000a01cb493d$fb8f3410$0401a8c0@xphd97xgq27nyf> In-Reply-To: Date: Tue, 31 Aug 2010 21:54:34 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 X-Antivirus: avast! (VPS 100831-0, 31/08/2010), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: VLF THOUGHT Content-Type: multipart/alternative; boundary="----=_NextPart_000_0108_01CB4957.194250F0" 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_40_50,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 x-aol-global-disposition: G x-aol-sid: 3039ac1d60584c7d6d516ac8 X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0108_01CB4957.194250F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Just rx x 6 this email ? From: Warren Ziegler=20 Sent: Tuesday, August 31, 2010 9:10 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: VLF THOUGHT Andy,=20 Yes that is how environmentalists were able to block the Navy's use= of high-powered sonar based on the damage it did to whales and dolphi= ns. http://www.msnbc.msn.com/id/21785920/ --=20 73 Warren K2ORS WD2XGJ=20 WD2XSH/23 WE2XEB/2 WE2XGR/1 On Tue, Aug 31, 2010 at 3:52 PM, Andy Talbot wrote: But think of the animals and birds with their extended hearing range= . Andy www.g4jnt.com On 31 August 2010 19:54, mal hamilton wrote: I see 15 Kilowatt audio amplifiers advertised, therefore there mus= t be a speaker system, public address horns available for such amplifi= ers.=20 If one of these speaker horns was directed line of sight towards= the horizon or a mountain top and a suitable dish positioned at the= receive end, it must be possibel to intercept such a signal at audio= frequencies. eg Transmit a tone which could be keyed at 9 - 20 Kcs an= d see what distance could be covered. Keeping the signal just above the normal human audio range would= avoid interference. or just TX a signal at say 5 Kcs and see how far it could be heard= by ear with this sort of power, maybe further than the same signal tr= ansmitted by radio means, except one had an exceptionally large antenn= a Maybe a NOV is required for this experiment!!!! de g3kev =20 =20 ------=_NextPart_000_0108_01CB4957.194250F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Just  rx  x  6 = this =20 email ?

Sent: Tuesday, August 31, 2010 9:10 PM
Subject: Re: LF: VLF THOUGHT

Andy,=20

   Yes that is how environmentalists were able to block= the=20 Navy's use of high-powered sonar based on the damage it did to whales= and=20 dolphins.


-- = ;
73=20 Warren K2ORS
               = ;=20 WD2XGJ 
               = ;=20 WD2XSH/23
               = =20 WE2XEB/2
               =20 WE2XGR/1



On Tue, Aug 31, 2010 at 3:52 PM, Andy Talbot= <= andy.g4jnt@googlemail.com>=20 wrote:
But think of the animals and birds with their extended hea= ring=20 range.
On 31 August 2010 19:54, mal hamilton <g3kevmal@talktalk.net> wrote:
I see 15 Kilowatt audio amplifier= s advertised,=20 therefore there must be a speaker system, public address horns ava= ilable for=20 such amplifiers.
If one of these speaker horns was= directed line=20 of sight towards the horizon or a mountain top and a suitable dish= =20 positioned at the receive end, it must be possibel to intercept su= ch a=20 signal at audio frequencies. eg Transmit a tone which could be key= ed at=20 9 - 20 Kcs and see what distance could be covered.
Keeping the signal just above the= =20 normal human audio range would avoid interference.
or just TX a signal at say 5 Kcs= and see=20 how far it could be heard by ear with this sort of power, may= be further=20 than the same signal transmitted by radio means, except one had an= =20 exceptionally large antenna
Maybe a NOV is required for this= =20 experiment!!!!
de g3kev
 
 
 
  




 


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