Hi as far as the Uk is concerned it is not allowed. You probably need to
contact Andy G4JNT for details he did approach the regulator at one time maybe
around 2001/2 when Geri was doing his tests the answer as I remember was:-
Frequencies below 10kHz are not allocated by International Treaty but we
control all frequencies between DC and gamma rays, and no we will not be
issuing any licences for that region.
I believe that was the RadioCommunications Agency things may be different now
with Ofcomm. The best person to know whether an approach would be worthwhile
would be John Gould G4WKL who nursed the 500k stuff through.
Alan G3NYK
--- On Mon, 22/2/10, Stefan_Schäfer <[email protected]>
wrote:
> From: Stefan_Schäfer <[email protected]>
> Subject: LF: VLF_8.79 kHz
> To: [email protected]
> Date: Monday, 22 February, 2010, 11:32
>
>
>
>
>
>
>
>
> Ok Roger,
>
>
>
> And do you know if f<9kHz is free for other countries in
> europe as
> well? What about the UK?
>
>
>
> If such a grounded dipole is best, than it is easy to build
> a big
> antenna without the problems we have on LF (getting the
> wire high above
> ground). So we also could try big/long antennas. Waht do
> you mean with
> amateur levels? Power range is clear, something arround
> 500W+-6dB. But
> the antenna? Sure, if you think about building an antenna
> in the
> garden, say 2x20m, is not very effective but what about
> 2x500m in a
> forrest, perhaps with the loading coils (which will be on a
> ferrite
> toroid i think) mounted 300m apart from the center? That
> could be
> interesting and easy to try. No tower, no earth radials,
> just 2 wires
> hung up on some trees and measured the impedance at the
> feed point,
> that would be a first step.
>
> This antenna will still be bad but what we are doing -on LF
> it is the
> same- is beeing fascinated to reach a good distance and
> make some
> contacts at very low frequencies, although it would be much
> easier on
> 40/80m...
>
> And so, if one would reach 50km with such a short dipole,
> the
> fascination would be enormous, isn't it? ;-)
>
>
>
> Has anyone, except Horst, tried such experiments as well?
>
>
>
> With the ground wave, one could reach the whole europe, i
> expect. But
> that are dreams...
>
>
>
> Stefan/DK7FC
>
>
>
>
>
>
>
>
>
> Am 22.02.2010 11:03, schrieb Roger Lapthorn:
>
> At this frequency, widely spaced, grounded
> electrode pairs are
> probably the best "antenna". There are
> references to how these work in
> the literature (for example NATO AGAARD papers from the
> 1960s,
> available on the internet I believe) and on one of the
> German ham sites
> (DK8KW) - see http://www.qru.de/#vlf ;.
>
> Don't expect great ranges: up to 10kms is a fair
> aim with modern
> signal processing technology and reasonable (amateur
> levels) available
> power. Project Sanguine achieved worldwide coverage to
> submarines at
> 76Hz (yes Hertz!) but used enormous power and antennas
> stretching for
> 100s of kms.
>
> 73s
> Roger G3XBM
>
>
>
>
>
> 2010/2/22 Stefan Schäfer
> <[email protected]>
>
> Hello Horst,
>
>
>
> That sounds really nice. If it would be easy to find some
> motivated OMs
> in the near field (31km) ;-), that would be an interesting
> field to
> test.
>
>
>
> Yesterday i have thought about possible antenna
> configurations for that
> range and got the idea that one could use a forrest as an
> antenna
> tower. There, you could hang up 100s meters of wire, in
> series and in
> parallel. You do not need to have that area beside your
> house. Nobody
> will see the wire and nobody will care about it.
>
> Since summer 2007 i have a horizontal loop antenna mounted
> in some
> trees on my hill with excellent results on all HF bands and
> also 160m.
> The loop has 130m and is mounted up to 12m above ground.
> Perfect
> matching from 160m to 10m with my symmetric tuner. I even
> tried
> matching on 2200m without a problem but with bad ODX
> results, of
> course. But if one would try 2x 10*100m on VLF, the ODX
> would be
> interesting...
>
>
>
> JO30OT is abt 160km from JN49IS and thus a little far i
> think ;-)
>
>
>
> What is your RX antenna and have you already catched some
> commercial
> VLF stations in that range? Are there some?
>
>
>
> 73, Stefan
>
>
>
> PS: One can be sure that there will never be SSB operation
> ;-)
>
>
>
> ________________________________
>
>
>
> Von: [email protected]
> im Auftrag von Horst Stöcker
>
>
> Gesendet: Mo 22.02.2010 09:29
>
> An: [email protected]
>
>
> Betreff: RE: LF: AW: Beaconing on 8.79 kHz in QRSS
>
>
>
>
>
>
>
>
> Hallo Stefan,
>
>
>
> there was a notice in Funkamateur 12/05, S. 1287, that in
> DL the range
> <9kHz is free.
>
>
>
> I could not believe that so I asked the BNetzA and after a
> while I got
> a letter which confirmed that.
>
>
>
> So there nothing you've got to do for getting a
> licence. You do not
> need one.
>
>
>
> There is no limitation of technical parameters like
> bandwith or power.
>
>
>
> Hard to believe in german, but obviously true.
>
>
>
> My QTH is Siegburg JO30OT
>
>
>
> Horst
>
> ___________________________________________________________
>
> NEU: Mit WEB.DE DSL über 1000,- ¿ sparen!
>
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>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
>
>
>
> http://g3xbm-qrp.blogspot.com/
>
> http://www.g3xbm.co.uk
>
> http://www.youtube.com/user/G3XBM
>
> G3XBM GQRP 1678 ISWL
> G11088
>
>
>
>
>
>
> --
> ----------------------------
> Dipl.-Ing. Stefan Schäfer
> Institut für Umweltphysik der Universität
> Heidelberg
> Im Neuenheimer Feld 229
> D-69120 Heidelberg, Germany
>
> [email protected]
> Phone: (+49) (0)6221 546387
> Fax: (+49) (0)6221 546405
>
> www.iup.uni-heidelberg.de
>
>
>
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