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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 -----
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:
[email protected]
> To: [email protected]
> 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
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