My thoughts precisely. The phrase attributed originally to Solon the Lawmaker of Athens in 437 BCE (or thereabouts) and subsequently Douglas Bader As mentioned recently, I tried to apply for a
Maybe some enterprising US hams could "borrow" the massive antenna system (if it is still up) for some <9kHz tests in much the same way some UK hams used the old Decca stations on 73kHz! Thanks - int
Thanks Andy. So they didn't actually say no, just didn't reply. 73s Roger G3XBM On 22 February 2010 20:45, Andy Talbot <[email protected]> wrote: My thoughts precisely. The phrase attribute
Roger, I believe that elf is being abandoned for use with submarines in favor of a system that shoots lasers from satellites into the water. The US has shut down its 76 Hz transmitter in Clam Lake Wi
Stefan, I just did a simple test: I took 2 old LW ferrite antennas and brought them to resonance at 1.5kHz with a bunch of capacitors. One ferrite antenna was used as TX antenna, fed by the 5W activ
Rick, Horst, et al, I am unsure of the "official" UK position regarding operation below 9kHz. Back in the late 1960s a Test and Development Licence was required and I held two around 1970 (G9BIB an
Hello LFers, I'd just like to throw in my two pence worth from this side of the pond. As it is very likely that the only listeners down there would be fellow experimenters, just go ahead and do it. I
Well, perhaps it is not necessary to reach a "DX", DX becomes very relative in that frequency range. 50km sounds like a really good DX here. 50km would be real dx, because this is not near-field anym
Hi Jacek My thought with laserscatter was that transmission at 20-30Hz might offer better propagation through the ground than 9kHz. 73 Robert without modifications wspr and laserscatter use frequenci
I agree with Mal its very difficult to radiate a signal on 137kHz, let alone 9kHz! That's why it is interesting... were it easy, then it would be for appliance operators... 73 Alberto I2PHD
If you are considering beaconing at 9kHz SpectrumLab has a nice "digomode terminal" that can be used as a beacon. the frequency can be whatever your sound card can generate (over 20kHz with a 48ks/s
Pete, what about putting a large (1..10nF) cap from the antenna base to ground ? It would reduce the required inductance with a factor 10 to 100 and at the same time transform the high loss resistanc
And do you know if f<9kHz is free for other countries in europe as well? What about the UK? Stefan, in Belgium anything below 9kHz (and above 300GHz) is "free" 73, Rik ON7YD - OR7T
All we need is a wire strung between K2 and Everest summits and fed from base camp below? --Original Message-- From: [email protected] [mailto:[email protected]] On
I guess the European alternative would be Britain as a radiator and mainland Europe as counterweight ;-) Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@blacksheep.
Alan, Rik and Stefan Thank you for the practical solutions...... I am reading up on the earth conduction work done by John Taylor it may be possible for me to adapt some of his methods for this locat
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
Those looking at vlf transmission should look at cave radio electronics, tens of kHz are used for communication and several kHz for beaconing. The antenna limitations aremuch greater than for radioam
