Some years ago (Ok some 35 years ago) I used to be a
very small cog in in high powered VLF transmissions from Antarctica
running 100's of Kw at a few KHz -and the memories of my knives, forks
and kitchen utensils humming at me whilst eating me ham and eggs whilst
the Tx was keyed are fond memories. Sadly that Base (Siple) closed the
year of so after I left the continent.
Conditions over the (North) pole were improving but Ive just got
another k=4 or more warning so we will see what happens tonight.
> Date: Wed, 13 Nov 2013 12:46:18 +0100
> From:
[email protected]
> To:
[email protected]
> Subject: Re: LF: VLF KL7L 8.97 kHz
>
> Hi Laurence,
>
> They installed a 2.5 MW wind power plant exactly where i've done
my
> experiments in 2010/11. Obviously it is a good QTH when you need
wind
> :-) So i cannot use that QTH any more. I would need to find a new
one.
>
> I don't want to say that the VLF times are over for me, maybe
there will
> come another season sometime. A lot can be done! :-)
>
> What about your location in AK? Is there no chance that YOU begin
to do
> some TX experiments, by using an "earth antenna" (uuuh, some
excitement
> grows in me when thinking back)? You should have the place to
install a
> very long one! You just need some wire, maybe 1...2mm diameter and
some
> 100m long. A dipole would be interesting. Maybe you can use it for
other
> bands as well! If i would live close to a forest, a lonely forest
(here
> they seem to clean it and cut some trees here and there to sell
them
> periodically!), i would have such an antenna and i would add 100m
pieces
> to the ends from time to time :-)
>
> With 700m wire and 250 W RF power i made 45km in DFCW-600. So if
the
> dipole ends are close to your home QTH (actually you can use a
simple
> long wire, not a dipole, then you will need just one /p ground
made of
> earth rods), then you can run 1 or 2 kW (or 3 :-) ) and your home
earth
> system is the first end of the radiator. 2 kW against 250W is +12
dB.
> Since you are not limited in time (like me, when beeing /p with
that
> small generator), people can try in "DFCW-60000" or 47 uHz!
Another 20
> dB! :-)
> And if you use a 7000m wire, is it then 10x the loop area? Would
that be
> another 20 dB? :-)
>
> Maybe you can gain VE7BDQ or VE7TIL (you remember?) and some other
> stations in a range below 1000 km for first tests! :-)
>
> BTW without the need for a loading coil of several 100 mH there is
no
> sound that nerves the XYL so it's very friendly to all :-)
>
> Give it a try! +100m each week!
>
> And keep us informed about the progress!
>
> 73, Stefan/DK7FC
>
>
>
> Am 13.11.2013 06:14, schrieb Laurence KL7 L:
> >
> >
> >>
> >>
> >>
> >>
> >> Subject: VLF DK7FC ?
> >>
> >> Stefan – is there any (any?) chance we can persuade you
to goto your favorite field location and shove up the Kite again over
the winter period for another run at VLF over the Pole – Ive improved
my s/n here down in the lower reaches and you never know?
> >>
> >> Thanks
> >> Long haul up here at the moment is just awful – pretty
auroras and snow….
> >> Laurence (and others!) kl7l
> >>
> >>
>
