Re(2): [Antennas] J-pole gain compared to 1/4 wave GP

DavidE Benedict iam at pmug.org
Sat Jun 30 11:56:22 EDT 2007


***
I believe that a J-Pole is a lower-angle radiator than a classic 1/4 wave
vertical --concentrates emissions to lower levels, and this is therefore
"gain" at those lower angles. That is, practically speaking,better in such
as reaching repeaters from HT's. 
-- I once used a stacked (colinear) J-Pole with outstanding results on 2m
on a fieldday...really reached out.

David
W7DBH


k6mhe at k6mhe.com,Internet writes:
>Over the years I've seem such outlandish claims 
>made for j-poles. For all piratical purposes a 
>j-pole has about the same gain as a ½-wave dipole.
>
>Here's an excellent source on the operation of j-poles.
>
>http://www.cebik.com/vhf/jp1.html
>
>73,
>Danny, K6MHE
>
>
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