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Old 18-Mar-2019, 1:49 AM   #4
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,452
Quote:
Originally Posted by kb4 View Post
Would it be beneficial in a practical sense to use something non metallic such as schedule 40 PVC for the last few feet of mast and if needed for ground just something like a 10 ga copper wire from antenna mount to the metal the PVC wood or other material is attached to in order to get more benefit from the antennas directing elements ?
I see no advantage to using PVC for the top portion of the mast, and it would fail sooner than metal. The antenna is designed to respond to signals that have horizontal polarization; a vertical metal mast would cause little harm to the antenna pattern.

In the case of two 91XGs mounted side-by-side, it is customary to use fiberglass for the horizontal boom that supports the two antennas.
https://www.atechfabrication.com/tes...cking_test.htm

https://www.atechfabrication.com/pro...tenna_boom.htm
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Last edited by rabbit73; 18-Mar-2019 at 1:56 AM.
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