Topband: gamma match a tower

[Ryszard Tymkiewicz]

> Actually the tower is 52' with a force 12 c3 trapless tribander at the top and another 10' of mast with a dual polarity 10 element 
> 2 meter beam on top of that.  What effect does the hf or vhf beam have on the action of the feed?  also the tower is guyed at 45' 
> and the guys are insulated from the tower.  There is also a house bracket at 18' and it is electrically connected to a metal gable 
> vent and there is a cross arm at 30' with a fm broadcast yagi and a scanner ground plane on it  The tower has 3 ground rods 1 by 
> each leg with 30' of buried copper wire clamped to each leg and running 3 directions, 1 direction terminated with another ground 
> rod and connected to the shack ground.  there is a alpha delta twin sloper mounted just 2' below the hf beam and it uses the tower 
> as a counterpoise also.  At 47' there is a uhf atv yagi attached to 1 leg.
> With all this baggage do you still think feeding the tower is a good idea?  I see far too many rf paths to decouple.

Jim I had similar doubts before I decided to my tower as a shunt feed.
I have only one tower and all antennas for 10 bands are on it. I have X7 with 2 elements for 30m above it 7 elements
for 50 MHz on 8 meters boom. On the level of 18m I have 2 elements wire delta loop for 40m and 2 half slopers
for 80m. As you see many antennas and wires ...and the shunt feed tower is working very well...for 3 years  I worked
10 new ones (to #290). So ,the best idea is just to try it...

                       73 GL
                         Rys
                      SP5EWY

BTW.The tower is only 4 meters from my house...