Topband: Vertical vs. Shunt-Fed Tower

[Steve London]

After many frustrating experiences with unwelcome interaction between 
various 160 antennas and towers, I am thinking about going back to 
basics by removing all the other 160 wires, and shunt feeding the 110 
foot tower (which has a number of yagis on it). All else being equal 
(such as ground system), are there reasons why a shunt-fed tower would 
work differently than a vertical of the same height, on an insulated base ?

73,
Steve, N2IC