Hi Roger,
That is easy to picture in my mind now. Thank you.
Mike
WE0H
Roger L wrote:
Mike,
You asked about my earth electrode set-up, so I'll try to describe it.
At the bottom of the back garden I have a copper earth rod about 1.5m
long driven into the soil. Here the soil is chalky "clunch". From this
earth rod a 2mm diameter PVC covered wire comes up 2m and then runs 10m
along the top of the fence before coming up to the bedroom. In the
bedroom another short wire 2m long connects to the central heating
radiator. A coax cable about 10m long runs back to the TX in the front
bedroom effectively bringing the two electrodes to the audio TX
connected via a step-up toroidal transformer.
Ignoring the loop within the ground, there is about 30 sq m of loop
area in the air. I want to try just an air loop (no ground electrodes)
to compare signal level at maximum range.
Before using the radiator and house pipes as the second electrode I had
two 1.5m copper rods 10m nearer the house than the "far" electrode.
This one had a baseline of 10m only and was less effective.
I'll try to do a drawing and put it on here later.
73s
Roger G3XBM
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