Topband: [Bulk] Best wire antenna for roof top location

[Tom W8JI]

>
> Some years ago, on 80 meters, an LZ station had a horizontal between two 
> tall buildings and had a very strong signal.
> 73
> Bruce-k1fz

Between buildings is entirely different than on a building roof.

Full context is important. As I said:

A simple vertical antenna has elevation pattern mostly determined by ground
several wavelengths from the antenna.

A simple horizontal antenna generally has elevation pattern mostly
determined by ground  ********* immediately below********   the antenna up 
to a few wavelengths
out.

If the building has wiring and large connected metallic things ********under 
the
horizontal antenna*********, it will act like a reflector. If the antenna is 
somewhat
low to the roof (less than 1/4 wave or more above the roof), the elevation
pattern won't be much different than a low dipole over flat earth. Most of
the radiation will be beamed straight up.


73 Tom