[Towertalk] lmr 400 question

[Maurizio Panicara]

> I've noticed that the portable news-gathering vans seem to use an
> alternative sort of rotation loop for their antenna masts.  It looks like
> they wrap 6-7 turns of coax around the mast, with the top fixed at the
> antenna and bottom end fixed to the truck body, such that when they rotate
> 360 degrees the coil just loosens or tightens a relatively small
> amount.  That seems like a mechanically superior approach.  Anyone tried
it
> in ham installations?  Would it work better with the stiffer cables?

Yes, it's known trick to use semi rigid cables like cellflex in rotable
systems.

73,
Mauri I4JMY


> 73, Pete N4ZR
> Sometimes a tower is just a tower