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Ian et al
Its anyone's guess where your amps are going, but
your signal is very strong with me, as good as most around the UK at the same
distance, those running the Decca Jeeps might be only marginally stronger but
think of the difference in RF output. I think your BK autocycle has about 100 w
out on 137 khz and the Jeep about 1200w out, so you seem to be doing
well.
Looks like your antenna and ground in spite of
some discrepencies is doing well.
I do not depend on real ground for my
system. I use about 6 insulated ground radials, each one 400 ft long and
not grounded.
I did try using copper ground stakes driven
into the ground where all the radials converge and all connected and it
makes no difference that I can detect. I tried ground stakes at the end of each
insulated radial and that again makes no difference.
I think the GROUND/EARTH as suggested by some
is a myth in some locations. The secret on LF is to get as much wire up in the
air as possible and use INSULATED ground radials. My loading coil is small,
around 0.5 mh and soon I hope to get some more wire up so that I do not need a
LOADING coil at all, the antenna will have a natural resonance at 137
khz.
It would appear that a so called good ground is
less important if you have a good antenna in the first instance.
I have tried a couple of radials then a dozen
radials and apart from a small change in impedence matching, which is easy to
correct it makes no difference to the RF amps and radiation and signals
reports.
My system TX/RX, Antenna etc is all designed for 50
ohms and according to reports since I started on LF some years
ago
the signal is the strongest from England on 136 khz
around EU and W/VE and only surpassed my MM0ALM in Scotland. inactive
at present. My RF power out from a home built TX is only a fraction of that
generated by those using the D/Jeep.
I must get my ex Cherry Burton D/Jeep
1200 W fired up one of these days and join the rest of the QRO
merchants
de Mal/G3KEV
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