mal hamilton wrote:
Richard
Try a 12metre fiberglass telescopic pole to support an inv L using
wire size 1mm as long as possible. Use a matching network at the
bottom of the vertical part, coil in series to earth. Tap down coil
for resonance, tap coax up a few turns from earth end for best match,
lowest swr, braid of coax to earth. Use a couple of insulated radials
lying on ground and connected to coax earth. This method never fails
to work.
There are other methods but the above is vy efficient, light and
portable.
Thanks for the tips Mal. Maybe I could fly a kite to support the wire
off the top of the pole. How long would the radials need to be to have
some benefit? I need to calculate the required inductance to resonate
the system - what's the best software to use no DOS here so can't easily
use Reg FGQ's progs.
I have been on 10GHz for the past year so 500kHz will make a nice change!
73
Richard
G3CWI
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