Hi, Rik.
On Tue, 14 May 2002, Rik Strobbe wrote:
too large (eg. salt water) the counterpoise won't be of much use. On the
other side even for s = 0 (worst soil you can think of) R won't be endless
as the counterpoise will still work.
I forgot to notice:
When formula was derived a<<1 was assumed. This correspond to real
conucting not dielectric ground. It's not very problem to avoid this
limitation but now real situation seems more interesting.
About too large S I'd say as folows. Are You sure conserpoise
(ground rod) length won't be important for GROUND LOSS resistance in this
case? May be it is not important for ALL loss resistance of antenna
because coil resistance and radiation resistance (if antenna is large).
About resistance dependance on frequency it seems then enviroment loss is
frequency depending, not ground resistance itself. Unfortunely I can not
estimate enviroment losses yet...
73 de RA9MB/Alex
http://www.qsl.net/ra9mb
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