[TowerTalk] decoupling

[w3svj@juno.com]

We are going to raise some dipoles (160, 80 and 40) on our existing
towers. The towers are in the fifty/seventy foot ranges. There are beams
on all of them and they are all lattice construction.

If the coax feeds are brought up through the tower body and tied to one
of the legs is there any or enough choking effect to preclude a coax
choke at the top at the center insulator. Life would be a lot simpler if
we didn't need the choke at the top.

I seem to recall folks running coax through the boom to the DE and
claiming a choke effect of the metal boom got them out of using a balun
at the DE, urban myth?? 

All the above going in at the STEEL CITY ARC, not my backyard, too bad.



73 de Nate, W3SVJ, in Pittsburgh where it's not so smokey anymore.

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