[BULK] - [TowerTalk] Omni Directional Antenna on Tower
    Steve Katz 
    stevek at jmr.com
       
    Wed Jan  5 14:47:38 EST 2005
    
    
  
2)  Putting the omni antenna on the very top of the mast.  Naturally, the 
antenna would rotate whenever I rotated the 6-meter and 2-meter horizontal
yagis, 
and I am concerned about flex in the coax and N connector over time and
about 
increased susceptibility to lightning (not a major risk here, but 
nonetheless...)
Does anyon have any thoughts?  Option 2 is appealing, but it sure seems dumb
to rotate an omnidirectional antenna...
::I'd put the antenna on top and let it rotate.  Use 100% shielded, or at
least double-shielded flexible cable (LMR400UF/RG-214/U, etc.) for the rotor
loop, and  hardline below that point.  I did this with one of my repeaters
for years.  Used to crack up the users with "you're kind of weak, but let me
swing the Stationmaster around on you..."  -WB2WIK/6
Thanks.
Bernie K5XS
Arkansas
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