250mw is radiating that well, crank it up to a hundred or so watts and I
am thinking it might make it to Mal's QTH...
Mike-WE0H
Roger L wrote:
Today I tried some more experiments with my 20m spaced earth electrode
"antenna" and small beacon TX on 136.93kHz (I think this is a more
accurate frequency). I switched over to QRSS3 and took the (deaf on
136kHz) FT817, E-field probe and PC out for a ride in the car to see
where copy stopped. Firstly, I stopped in a National Trust car park
1.5km from home - solid copy on QRSS3 when holding the E-field probe box
as high as possible above the car roof. Then I drove on to a spot
*4.6km* from home (Swaffham Bulbeck) and copy was again achieved, albeit
not as strongly. I was prevented from doing further tests as the coax
inner from the E-field probe to the FT817 came apart, so I had to return
home.
So, I'm certainly getting a signal radiated beyond the near field. I've
no other LF-HF antennas up (just the VHF/UHF vertical which was
disconnected), so there is no coupling into other antennas. In the
coming days I'd like to see the directionality of the "antenna" by
looking for signal levels with the QRSS3 beacon at all compass points
some 4-5kms away from the QTH.
In the meantime, if anyone near Burwell, Cambs wants to look for the
QRSS3 signal near 136.93kHz I'll leave it running until about 8pm
tonight when I have to switch off as my grandson is sleeping in the
shack bedroom. Any reports would be amazing.
73s
Roger G3XBM
--
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G3XBM GQRP 1678 ISWL G11088
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