Return-Path: Received: from mtain-ma03.r1000.mx.aol.com (mtain-ma03.r1000.mx.aol.com [172.29.96.11]) by air-me03.mail.aol.com (v129.4) with ESMTP id MAILINME033-8baa4ce8a5098e; Sat, 20 Nov 2010 23:50:17 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 65CAC380000A7; Sat, 20 Nov 2010 23:50:15 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PK1r4-0005YR-2Y for rs_out_1@blacksheep.org; Sun, 21 Nov 2010 04:48:46 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PK1r3-0005YI-AT for rsgb_lf_group@blacksheep.org; Sun, 21 Nov 2010 04:48:45 +0000 Received: from qmta14.westchester.pa.mail.comcast.net ([76.96.59.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PK1r1-0002bZ-Bj for rsgb_lf_group@blacksheep.org; Sun, 21 Nov 2010 04:48:45 +0000 Received: from omta07.westchester.pa.mail.comcast.net ([76.96.62.59]) by qmta14.westchester.pa.mail.comcast.net with comcast id Zggq1f00A1GhbT85Egockl; Sun, 21 Nov 2010 04:48:36 +0000 Received: from JAYDELL ([76.23.233.102]) by omta07.westchester.pa.mail.comcast.net with comcast id Zgoc1f0052DDHkk3TgocF7; Sun, 21 Nov 2010 04:48:36 +0000 Message-ID: <000f01cb8937$5b2d67a0$8d01a8c0@JAYDELL> From: To: References: <1290270401.1475.15.camel@gerhard-desktop> Date: Sat, 20 Nov 2010 23:48:35 -0500 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,NO_REAL_NAME=0.55 Subject: Re: VLF: Funny things! Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01CB890D.72209830" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_20_30,HTML_MESSAGE, NO_REAL_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: 3039ac1d600b4ce8a50727c1 X-AOL-IP: 195.171.43.25 ------=_NextPart_000_000B_01CB890D.72209830 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Laurence Thanks for the info on the Siple operation. Was stumbling through the logs and found a curious entry for 17 NOV ... reference made to "Haflers". Hmmm! Fascinating stuff. Jay W1VD WD2XNS WE2XGR/2 ----- Original Message ----- From: Laurence KL7UK To: rsgb_lf_group@blacksheep.org Sent: Saturday, November 20, 2010 11:13 PM Subject: RE: VLF: Funny things! I was fortunate to be working in Antarctica for a number of years and visted Siple station just after they reopened the base in 1978 (closed for a prior season or so due to a Hepatitis outbreak... who says there are no germs in Antarctica!) I was having breakfast there having just flown in as co-pilot (point it that way Laurence....) from our refuelling stop at 80 degS after dropping off some glaciologists on the Rutford Ice stream near the Vinson Massif The new replace VLF Jupiter transmitter was running a series of stepped 2-4Khz (im guessing here but my hearing was a lot better then) tones every few seconds. What I vividly remember was the cutlery and anything with a metal overlap vibrating at the Tx freq...pretty interesting really. The cook said "you get used to it but the $^%$# tones are annoying given the repitition...." (dah de dahhh da de dahhh etc) Given the TX had an RF power of (stated) 150Kw perhaps its not surprising everything was being excited. Im sure it wasnt running at that power that day as the lights werent dimming that much - Nice breakfast in any case chomping on my psuedo real bacon and canned powered eggs. http://www-star.stanford.edu/~vlf/Antarctica/Siple/index.htm Laurence KL7UK in Dallas this evening... > From: gerhard.hickl@aon.at > To: rsgb_lf_group@blacksheep.org > Date: Sat, 20 Nov 2010 17:26:41 +0100 > Subject: VLF: Funny things! > > Hello group ! > > Among others, I'm experimenting on VLF. > > Today, I applied about 70W on my 16m high Marconi. The loading coil is a > Variometer (460-580mH) and the capacitive load of the antenna is about > 600pf. The antenna current was measured at about 300mA. > > 1. The coil is whistling but also the wires running across my property > do. I could hear the high tone even in abt. 70m away from my place. This > could cause problems with my neighbours, I guess. > > 2. You ------=_NextPart_000_000B_01CB890D.72209830 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Laurence
 
Thanks for the info on the Siple operation.
 
Was stumbling through the logs and found a=20 curious entry for 17 NOV ... reference made to "Haflers= ".=20 Hmmm!
 
Fascinating stuff.
 
Jay W1VD  WD2XNS  WE2XGR/2&nb= sp;
----- Original Message -----
From:=20 Laurence KL7UK
Sent: Saturday, November 20,= 2010 11:13=20 PM
Subject: RE: VLF: Funny thing= s!

I was fortunate to be working in Antarctica for= a number=20 of years and visted Siple station just after they reopened= the base=20 in 1978 (closed for a prior season or so due to a Hepatitis=20 outbreak... who says there are no germs in=20 Antarctica!)
 
I was having breakfast there having= just flown=20 in as co-pilot (point it that way Laurence....)  from = ;our=20 refuelling stop at 80 degS after dropping off=20 some glaciologists on the Rutford Ice stream near the Vinson=20 Massif
 
The new replace VLF Jupiter transmitter was= running a=20 series of stepped 2-4Khz (im guessing here  but my hearing was= a lot=20 better then) tones every few seconds. What I vividly remember= was the=20 cutlery and anything with a metal overlap vibrating at the Tx= =20 freq...pretty interesting really. The cook said "you get used to it= but the=20 $^%$# tones are annoying given the repitition...." (dah de dahhh&nbs= p; da de=20 dahhh etc)
 
Given the TX had an RF power of (stated) 150= Kw perhaps=20 its not surprising everything was being excited. Im  sure= it wasnt=20 running at that power that day as the lights werent dimming that muc= h - Nice=20 breakfast in any case chomping on my psuedo real bacon and cann= ed powered=20 eggs.
 
http://www-star.stanford.edu/~vlf/Antarct= ica/Siple/index.htm
 
Laurence=20 KL7UK in Dallas this evening...
 
> From:=20 gerhard.hickl@aon.at
> To: rsgb_lf_group@blacksheep.org
>= ; Date:=20 Sat, 20 Nov 2010 17:26:41 +0100
> Subject: VLF: Funny things!<= BR>>=20
> Hello group !
>
> Among others, I'm experiment= ing on=20 VLF.
>
> Today, I applied about 70W on my 16m high Marc= oni. The=20 loading coil is a
> Variometer (460-580mH) and the capacitive= load of=20 the antenna is about
> 600pf. The antenna current was measured= at about=20 300mA.
>
> 1. The coil is whistling but also the wires= running=20 across my property
> do. I could hear the high tone even in ab= t. 70m=20 away from my place. This
> could cause problems with my neighb= ours, I=20 guess.
>
> 2. You
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