I think I would hang it and just see how it works, while carefully
documenting impedance and other data for various frequencies and bands.
I believe ANY nearby large object, especially one of made of metal,
can affect the radiation pattern, or or affect impedance, but you won't
really know HOW if you don't try it. I am no expert on computer
modeling programs, but I doubt that would give you much of an answer to
how this structure would affect a dipole, whereas the programs do
consider different ground conditions. Maybe you could look into the
computer modeling programs, and see what sort of
worst-case-metal-object-below-the-antenna scenario you can construct,
and see if that makes any substantial difference.
But I say hang it and see how it plays... then try the vertical Kris
mentions... and compare them... and then try something else... and... so
forth until you either get too sick or too old. ;-)
Just MY take...
---------------------- K8JHR ------------------------------
On 10/11/2012 5:05 PM, Kris Merschrod wrote:
Dick,
I'd go for a VERTICAL and use the pool structure for radials.
Yes, the Al will distort the radiation pattern of the dipole and change
the impedence but what with the TT Tuner that can be handled. With the
linear folks can get an RF tan instead of those dangerous sun rays!
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