[TowerTalk] closeness to commercial building roof top
Tue, 2 May 2000 22:09:29 -0600
It it is placed at the edge of the roof, it should act like
a 70 ft high antenna when pointed away from the building.
When aimed over the roof (assumed flat), if the 5-30 degree
reflections intersect the roof, it will probably act like a 10 ft high
I suspect some DXpeditions have fallen victim to this scenario.
(This assumes the roof contains continuous metallic structual
de Tom N4KG
# # # # # # #
On Tue, 2 May 2000 10:04:51 -0500 firstname.lastname@example.org writes:
> We are considering mounting a 10m-40m yagi on the top of a
> building. The roof is about 60' above the ground level. We want
> antenna at 70', so a single 10' tower section is all that is needed
> the roof, but I am a little concerned about that being too close to
> roof and getting some interaction. Any thoughts on that? Thanks,
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