[TowerTalk] Shunt fed tower 2

p.haire jhaire at bellsouth.net
Sat Nov 11 16:08:33 EST 2006


Thanks for the info on shunt tower.

I am 70 and retired.

A few years ago I cut my vintage Rohn fold over tower from 50 feet to 30 feet so I could manage it better.

Above the top at 35 feet is a triband.  I have a wire spaced 1 foot from the tower and attached at the 30 foot point.
I feed it at the bottom with coax and many radials.  On 80 cw with 50 watts I work into europe.  On 40 cw with 50 watts I have worked into the Indian Ocean.  I am assuming it works on transmit or propagation was good.  But on receive it is a dog.  A real failure.

Compared to an off center fed 33 foot vertical (WD9AHH 73 magazine aug 1981) the vertical is supperior in signal strength received.

I want to use the tower and vertical in a phased array using discimilar verticals (Yardley Beers W0JF QST oct 1977).

Before I go on I want to make sure the tower will not weaken the performane over the complete array.

I am beginning to think it is best to go with some of the suggestions or a helical end loaded horizontal.

Any suggestions or thoughts about the tower?

Paul    WA5MUE


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