On Sun, 4 Apr 2010, George Vastianos wrote:
Does anyone who received DK7FC's signals was using e-field probe
antennas like BBB-4????
I used a modified PA0RDT mini-whip. I think i've managed to receive the
long dash from the last transmission via an e-field antenna. I'm not 100%
sure, therefore i won't be claiming reception, before i get conclusive
results.
Regarding E-field vs. H-field antennas, in a noisy environment in the city
the E-field antenna is much better, because the electric fields are
confined within buildings, while magnetic fields are not. The E-field
antenna i'm using gives a noiseless signal when receiving SAQ on 17.2kHz,
while a H-field antenna in the same building in 2006 used to give signals
which are readable, but with strong qrm, and since 2007 i have only seen
traces of SAQ in the qrm. In a noiseless environment there are
electrostatic effects, which can cause noise to the E-field antenna, and a
H-field would probably be better, but i have yet to see such a noiseless
place.
My bet would be on the e-field.
VY 73
Jacek / SQ5BPF
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