[K3PZN-List] Again with my ignorance...

[Neeriemer, Bill (NIH/NLM/LHC) [C]]

OK,  I've got a dual band j-pole made out of solid aluminum pieces,
except for a couple of plastic pieces one the ends to protect from
poking one's eye out.  (Actually I have 2, the other is Stainless
Steel.)

I mounted it on a metal post approx 6' long.  (Steel I think)

The mounting brackets are metal.  (probably aluminum)

The system works well.  SWR = 1:1 consistently.  I can be heard from
Westminster without difficulty.  I'm in Mt. Airy.

My question is:

What, if anything, prevents the entire contraption including the post
from being energized when I transmit?

I'm not brave enough to touch the post to see if it is energized.  I
decided to err on the side of caution and assume that it is.

I see no evidence of any insulators anywhere on the antenna or mounting
brackets.

It would seem to me that if the post is in fact energized, then it would
be impossible to factory tune it.

Can someone explain this to me?

Thanks

73 Bill W3STG