[TowerTalk] vertical antenna siting -- over steel roof or ground mounted

[Pete Smith]

I'm considering installing a trap vertical (HF-9V) for 80-10 meters.  I
have two possible locations for it.  One is in the center of a 30 x 40 foot
steel building roof, about 10 feet off the ground (and with a slight
slope).  The other is some distance further away, on the ground.

In the former case, I anticipate I would need to use resonant elevated
radials in addition to the ground plane afforded by the roof, at least on
the lower bands.  If I ground mounted it, I would plan to put down 30 or so
non-resonant radials on the ground surface (or just under it). 

Question is -- which location is likely to give better results?

73, Pete N4ZR

Sometimes a tower is
just a tower





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