TopBand: Feeding a grounded tower

[Tom Rauch (W8JI)]

Steve Zettel wrote:

> If I go ahead and use unbroken EHS from tower to grounded guy anchors (the
> base of the tower is definetely grounded a la Ufer and ground rods), what
> is the best way to feed the tower for 160M, or is there a best way? Should
> I consider breaking each guy at least one place, and if so, where?

Hi Steve, 

Consider this. If you run an inverted L up between uninsulated guylines,
it is almost like shunt feeding the tower anyway as far as losses and
unwanted resonances are concerned.

Ten feet of spacing on 160 is .02 wavelengths. Common sense tells us we
should never expect a two meter antenna less than one inch away from a
mess of wire to be unaffected by coupling, so why do we thing 10 or
twenty feet on 160 makes a difference?

Even 50 feet of spacing on 160 is well within nearfield, whether it is
ground radials or guy lines.

If you are a serious op, insulate the guy lines, put in a good ground
system, and get rid of the problems. 

73 Tom



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