Cool. Thanks Brook. I was fortunate to get several tours at NSS before they
tore it down. I (and several others) were also able, through one of our
senators, to have three of the 600 foot self supporting towers saved and
reused for public safety. These three legged towers have a leg spacing of
150 feet.
Best regards,
Tom
----- Original Message -----
From: "Brooke Clarke" <bro...@pacific.net>
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Sent: Monday, July 16, 2012 4:03 PM
Subject: Re: [time-nuts] WWVB and Free Democracies Survival
Hi Didier:
Yes, here's a table with some sub com frequencies:
http://www.prc68.com/I/FA.shtml#ELF
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Didier Juges wrote:
I believe ELF is more like 100 Hz, which can be received much deeper, so
the sub can stay at the bottom. 24kHz is VLF.
Didier KO4BB
Magnus Danielson <mag...@rubidium.dyndns.org> wrote:
On 07/16/2012 03:28 AM, Tom Miller wrote:
I believe they called that system a "bell ringer". It let the sub
know
that it had to come close to the surface to receive new information.
I'll need to google around to find more about it.
We had a ELF transmitter (NSS) in Annapolis that transmitted about 1
MW
at about 24 kHz. Anyone ever seen 3 inch diameter litz wire?
We had the ELF transmitter at Grimeton (SAQ) transmitting about 200 kHz
at 17.2 kHz using the Alexanderson alternator. I think the litz wire
was
4 inch in diameter as I recall it. It was cutting edge in 1924.
It was initially used for telegraph traffic to the US, and the Long
Island main station. It was really never keyed by hand, it was keyed
remote with optical keyer and messages taped back-to-back. After its
main service for telegraph messages was no longer motivate it, it got
used as the "bell ringer" for our subs and kept operational and
maintained up till about 1996 and it has since been taken care off so
it
can be used for museeum. It's now on UNESCOs world-heritage list.
Links:
http://www.grimetonradio.se/
http://www.radiostationengrimeton.se/
http://en.wikipedia.org/wiki/Grimeton_VLF_transmitter
http://www.grimeton.org/
http://www.alexander.n.se/
Do visit Grimeton if you are in south of Sweden. You can also tune in
to
it's transmissions and report back.
The remaining submarine radiostation in Ruda could actually be turn
into
a time-code transmitter. It's a matter of financing it and giving the
order.
Cheers,
Magnus
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