[TowerTalk] 160 - 80m "T"

[Rick Karlquist]

k3hx at juno.com wrote:
> I wish to put up a top-loaded vertical for 160m (1.83 MHz.)
>
> I can go 60 feet up and the top-loading "T" wire can be only 46'
> long overall.
>
> I'd be grateful for suggested values for a loading coil between the top
> of the vertical element and the middle of the horizontal "T" wire.
>
>
> Once I get the thing to operate properly on 160m, I'd like to use the
> same antenna on 80m (3.56MHz) and would appreciate suggested circuitry
> and values.

For 160, put the loading coil at the base, not the top.  Experimentally
determine tap that gives 50 ohms.

For 80, put a series capacitor at the base.  Should be a pretty
good match with just that.

Rick N6RK