Topband: modeling question

[Maurizio Panicara]

W7IUV:
> My coax is NOT taped to the tower leg, and is NOT grounded at the base
> either. This may be a lightning issue, but it would appear to not be a RF
> issue in this particular installation.
>
> On the other hand, maybe it's better to be safe than sorry. Certainly
> everyone is not as lazy as I am!

Hi Larry,

in this case I was not pointing out about the coax placement because of
safety reasons.
The cables, running from the base of a shunt fed tower to a yagi antenna, or
to a rotator, are more or less following the voltage distribution along the
tower, expecially if the cables are kept close to the tower and grounded at
tower base.
This fact sets the fed element of a yagi to the same RF potential of the
boom or all the cables of a rotor to the same RF level avoiding damages.

73,
Mauri I4JMY


--
FAQ on WWW:               http://www.contesting.com/FAQ/topband
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com