----- Original Message -----
Sent: Tuesday, December 14, 2010 12:18
PM
Subject: LF: Re: G3XBM - very long
carrier VLF transmission test Dec 15th
Hi Roger,
I was under the impression that your earlier
tests had shown that reception from your earth electrodes at any distance was
only possible by also using earth electrodes. This suggests that those of us
using an aerial stand little or no chance, correct?
From what I recall of tests done forty or so
years ago with friends, using wideband audio into the ground, any form of 'in
air' reception attempt was seriously bad. The reception of a signal injected
into the earth as the conduction medium also required the receive system to be
in the same medium i.e. the earth.
Do prove me wrong...and good luck with the
tests.
Vy 73,
Chris, G4AYT, Whitstable, Kent.
----- Original Message -----
Sent: Sunday, December 12, 2010 10:51
PM
Subject: LF: G3XBM - very long carrier
VLF transmission test Dec 15th
This Wednesday, Dec 15th, I will run tests on
8.7608kHz with very long continuous TX periods of several
hours interspersed with gaps of 0.5 to 1 hour. Transmissions will start
at 0900GMT and finish at 2300GMT. I will reveal the TX pattern after the
test so the test is done "blind".
I'd be most grateful if suitably
equipped stations could look for any possible signs of the signal, even
though I shall only be using the 20m spaced earth electrodes and 5W as used
for my local earthmode tests. Those able to screw the bandwidths right down
may just be able to detect something, although I think it is unlikely at any
great distance.
15.12.10
0900-2300z
8.7608kHz
Carrier "on" periods of 30mins or more
Good luck
to anyone having a go.
73s
Roger G3XBM
--
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM GQRP 1678 ISWL
G11088
