Topband: Broadband vertical

[Herbert Schoenbohm]

 >I'm moving ahead with my plans to shunt feed a tower, >
> A question occurs about how much of the 160 meter band can be covered when
shunt-feeding.
>
>
Barry,

I found here that the bandwidth of a CLC network on a shunt fed top loaded
75 foot tower was too restrictive. 10 to 20 KHz without retuning. When I
went to a wire cage spaced 36 inches around the tower and got a straight
series vacuum cap to tune it  and found the sweet point, rather than a
complex network, the bandwidth really improved. 1800 to 1900 KHz  is very
reasonable and under 1.8 to 1. I am very impressed with the copper wire cage
feed.

73

Herb Schoenbohm, KV4FZ