[TowerTalk] Rohn 45G Pier Pin with Base Plate Insulator?

[Jeff DePolo]

> I am starting the foundation/ground work for a modest Rohn 45G tower
> (60').  To make extra use as a radiator I was planning to insulate the
> concrete base from the bottom section(pier bin base) with something flat
> and high compressive strength (1/2" HDPE, UHMW or even fiberglass sheet).

No need to reinvent the wheel - Rohn makes a tapered section and base
insulator for 45G.  Of course, then you also need to use non-conductive guy
wires or segment them with insulators.

But I'm confused.  You said "make extra use as a radiator" - it sounds like
you are going to have antennas mounted on it as well.  How are you going to
isolate the feedlines to keep them from shorting across the base?  It's not
impossible, but certainly adds to the complexity especially if you are going
to operate multiple bands.  Provide more details.

					--- Jeff WN3A



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