Return-Path: Received: from mtain-mc08.r1000.mx.aol.com (mtain-mc08.r1000.mx.aol.com [172.29.96.80]) by air-md02.mail.aol.com (v129.4) with ESMTP id MAILINMD021-8b784c0030e020f; Fri, 28 May 2010 17:08:48 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mc08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 710C0380000FB; Fri, 28 May 2010 17:08:46 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OI6mP-0002qE-0k for rs_out_1@blacksheep.org; Fri, 28 May 2010 22:07:45 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OI6mO-0002q5-Fw for rsgb_lf_group@blacksheep.org; Fri, 28 May 2010 22:07:44 +0100 Received: from mail-wy0-f171.google.com ([74.125.82.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OI6mL-000225-A0 for rsgb_lf_group@blacksheep.org; Fri, 28 May 2010 22:07:44 +0100 Received: by wyb40 with SMTP id 40so849646wyb.16 for ; Fri, 28 May 2010 14:07:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=M+n4uvS/x1qh0LyMmWolk0PsnFup4qYucH0sIYXS7NY=; b=Qzh45enMYk/nJTdWZJwdJnIyrudBTl8xoEYsRuRKhSnsSXyNjtQgy7fZvtYSiHk13o xlC3gkwP5sdYn8Yjzq0KIWhbkA4n2SJgCheUQSNMEt5CyZkotV196PK4eIT6vaoI9qWE Ifh/2o6A1DhOM6C0VvgvaucfROUixMkfZZ0qg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=vE88X/MfwMKI1OXBs+UA9tNJn7urq2uIwzUt39QjbI+mOsZBRrQVJs7ITVzwTkhc0Z rYsd/kzGZKSUkWYUFWCB+RQ0voCBrM745GfTG7ijaEik5snxwKeKPJWj47jaGYSskhXX 9LSkHPwJRqTpQTywDH6o3a3j+6ZknnsgC5tRw= MIME-Version: 1.0 Received: by 10.216.87.200 with SMTP id y50mr2005129wee.0.1275080854415; Fri, 28 May 2010 14:07:34 -0700 (PDT) Received: by 10.216.38.67 with HTTP; Fri, 28 May 2010 14:07:34 -0700 (PDT) In-Reply-To: References: <38A51B74B884D74083D7950AD0DD85E82A1C00@File-Server-HST.hst.e-technik.tu-darmstadt.de> <1344257766.4243506.1275063067203.JavaMail.fmail@mwmweb035> Date: Fri, 28 May 2010 22:07:34 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: 8.97kHz - Near field test by ear: The "human factor" Content-Type: multipart/alternative; boundary=0016e6d7ea70632b6e0487ade5d9 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-m272.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60504c0030de2a5e X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --0016e6d7ea70632b6e0487ade5d9 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable John (GM4SLV) et al, Well, unlike 500kHz WSPR, I doubt you'll ever be copying my signals sub-9k= Hz signals, although you may well copy Stefan and others from Germany next autumn/winter and Mal G3KEV if he can be persuaded to give it a real go wi= th his large antennas and potential for high power; I hope he does. Here I'm very much enjoying my simple QRP experiments sub-9kHz. I've a set of goals: 0.5km (achieved this week), 1km (hopefully within the next 2-3 weeks with QRSS), then 3km to G6ALB (in the next village). If I achieve these goals I shall be very pleased and will no doubt have learned a few things in the process. I see adverts for HF rigs, beams and linears costing *thousands* of pounds and reflect that my *entire* VLF system cost about =A315, maybe =A330 if= I build a bigger PA. Playing with VLF suits me just fine and it an be don 73s Roger G3XBM On 28 May 2010 21:13, Andy Talbot wrote: > Only to those of a, errr, well, somewhat younger age. > 800Hz to decent speakers, and its a different matter.... > > Mind you, listening to a teenagers car just gone past, a few tens-Hz of > bass-boom goes a long way. He won't be hearing 8kHz in a few years time= . > > Andy > www.g4jnt.com > > > On 28 May 2010 20:50, John P-G wrote: > >> >> >> On Fri, 28 May 2010, Horst St=F6cker wrote: >> >> > Hello dreamers >> > >> > Unbelievable: 400m at by ear reception with only 4 Watt >> >> >> >> >> I'm amazed at the work put in by the dreamers on this band, but just th= ink >> - 4W of 9kHz fed to a decent speaker system - would be audible by the >> human ear at 400m, just as accoustic waves... surely?? >> >> >> >> >> Keep it up guys, this really /is/ LF if anything ever is. Makes 500kHz >> seem light light-waves >> >> J >> >> GM4SLV > > > --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 --0016e6d7ea70632b6e0487ade5d9 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable John (GM4SLV) et al,

Well, unlike 500kHz WSPR, I doubt you'll= ever be copying my signals sub-9kHz signals, although you may well copy= Stefan and others from Germany next autumn/winter and Mal G3KEV if he can= be persuaded to give it a real go with his large antennas and potential= for high power; I hope he does.

Here I'm very much enjoying my simple QRP experiments sub-9kHz. I&= #39;ve a set of goals: 0.5km (achieved this week), 1km (hopefully within= the next 2-3 weeks with QRSS), then 3km to G6ALB (in the next village).= If I achieve these goals I shall be very pleased and will no doubt have= learned a few things in the process.=A0

I see adverts for HF rigs, beams and linears costing thousands= of pounds and reflect that my entire VLF system cost about =A315,= maybe =A330 if I build a bigger PA.=A0 Playing with VLF suits me just fin= e and it an be don

73s
Roger G3XBM

On 28 May 2010 21= :13, Andy Talbot <andy.g4jnt@googlemail.com> wrote= :
Only to those of a,=A0 errr, well,=A0somewhat younger age.=A0=A0=A0=
800Hz to decent speakers,=A0=A0and its=A0a different matter....
=A0
Mind you, listening to a teenagers car just gone past, a few tens-Hz= of bass-boom goes a long way.=A0 He won't be hearing 8kHz in a few ye= ars time.
On 28 May 2010 20:50, John P-G <g= m4slv@sighthound.demon.co.uk> wrote:


On Fri,= 28 May 2010, Horst St=F6cker wrote:

> Hello dreamers
>> Unbelievable: 400m at by ear reception with only 4 Watt


<tounge firmly in cheek>

I'm amazed at the work= put in by the dreamers on this band, but just think
- 4W of 9kHz fed= to a decent speaker system - would be audible by the
human ear at 400m= , just as accoustic waves... surely??

</tounge in cheek>


Keep it up guys, this really /is/= LF if anything ever is. Makes 500kHz
seem light light-waves

J
GM4SLV




--
http://g3xbm-qrp.blogsp= ot.com/
http:/= /www.g3xbm.co.uk
http://www= .youtube.com/user/g3xbm
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088
--0016e6d7ea70632b6e0487ade5d9--