At 18:10 5/25/2006, Doug Waller wrote:
>Even a near perfect wire radial field close to the base of a single
>vertical is inefficient due to half the fields around the radial
>wires being in the ground. This close-in loss, where power
>concentration is high, can be eliminated or reduced by using solid
>metal plate in lieu of wire radials, or by a using a Kinstar-fed cage.
What diameter or radius should this solid metal plate be to
eliminate/reduce this close-in loss on 160M??
73 Phil NA4M
.--. .... .. .-.. _. ._ ...._ _ _
Phil Duff NA4M & Ann Duff
Georgetown, TX.
_______________________________________________
Topband mailing list
Topband@contesting.com
http://lists.contesting.com/mailman/listinfo/topband
|