I will certainly be on the look out for any such signals. My active
antenna starts to roll off below 10kHz so sensitivity will be down a
bit but it is good for anything above 10kHz.
I am in the suburbs of a city (Wellington) and have a 1000sq.m
section, with the active antenna away from other houses, but I still
get some minor QRM from time to time.
This would be real DX if it could be accomplished!
73
Con
On 27/10/2010 10:47 a.m., Stefan Schäfer wrote:
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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