[Lowfer] VLF reception

[Douglas D. Williams]

Good job, Jay. What you are seeing is a plethora of military MSK stations,
both stateside and overseas. The strongest ones are in the USA. NAA, 24
kHz, is always the strongest at my QTH. If you mess with the settings in
Spectrum Lab, you can tell it the lowest and highest frequencies you want
to view, and thus magnify a certain chunk of spectrum that you are
interested in.

Typically, there isn't a lot of excitement down there, as most of those
stations are on 24/7. Occasionally you will see a TACAMO (take charge and
move out....don't you love acronyms...) station, often around 18 kHz.
These, IIRC, are flying transmitters that trail a long wire antenna.

For me, hearing the Russian Alphas is a big deal. Those are marked RSDN on
your Spectrum Lab display. I used to get very good copy on the old OMEGA
transmitters, but the Alphas are weak here at my QTH.

There is a group of experimenters, mostly in Europe, who transmit on the
"Dreamer's Band" (below 9 kHz). I believe they mostly use QRSS600 (or
slower)!! You can imagine the frequency stability and accuracy that is
necessary to achieve DX on that band. I would assume GPS discipline is a
must, both for the transmitter and the receiver. I think there is a Yahoo
group, if you're interested.

As for USA VLF experimenters, our own Dex has set a record for overseas
Dreamer's Band reception, as you can read about on the LWCA home page.

Finally, here is a link to a web site that specializes in sub 22 kHz topics
and experiments:

http://www.vlf.it/


Well, I got a little long winded there, but hopefully said something that
was at least mildly interesting. ;-)

73, Doug KB4OER





On Fri, Nov 21, 2014 at 11:58 PM, Garry Hess <k3siw at sbcglobal.net> wrote:

> Jay, I envy the "quiet" nature of your screencapture. Here I have a
> substantial picket fence of 60 Hz harmonics leaked out by ComEd 24/7. A
> fine source for VLF stations and frequencies is on Jay/s (W1VD) site at
> http://www.w1vd.com/vlf.html. Another source of information is at
> http://www.classaxe.com/dx/ndb/rna/signal_list. Just enter low
> frequencies like 10 to 100 kHz, check the "other" type box, then "go". It's
> also helpful to do the same for the Europe and Worldwide cases.
> --
> 73, Garry, K3SIW, EN52ta, Elgin, IL
>
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