Hi Roger,
Am 26.10.2010 23:18, schrieb Roger Lapthorn:
Stefan,
The possibility of whistler duct AMATEUR propagation is fascinating.
There are (I think) spectrograms of such propagation from NAA (~14kHz)
back in the 1965 book "Whistlers and Related Ionospheric Phenomena" by
J.A.Hellliwell (I have a copy). This could mean signals getting to,
for example, conjugate locations in the southern hemisphere
(S.Africa?) with relatively low attenuation. A chirped signal would
also show whisper dispersion I guess.
Yes, absolutely interesting! We will do that! And SpecLab can easily
generate such a signal, my PA can easily transmit such a signal and my
earth antenna can easily radiate such a (broad band) signal! :-)
Any further hints/ideas, Roger (and the group)?
You will need some grabbers in distant places!
Maybe ZL2AFP can help us here by receiving? :-)
73, Stefan
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