On Oct 6, 2006, at 3:32 PM, K3vw@aol.com wrote:
> Once again, one does not use a balun on a vertical antenna because
> it is an
> un-balanced antenna !! You use a UN-UN or an RF Choke at the feed
> point.
> Balun's are for balanced-to-unbalanced, antennas & coax !! Or did
> I forget
> something in Antennas 101 in college ? Willy K3VW
A quarter-wave vertical with radials is definitely unbalanced. A
half-wave, center fed vertical is balanced if it is sufficiently
elevated (with the feed perpendicular). Most are probably "semi-
balanced", since the capacity to ground is different for the two
halves and/or one half will be more tightly coupled to the feed line.
Bob, N7XY
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|