yenduc(at)sbcglobal.net
Guest
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 Posted: Sun Feb 11, 2007 9:18 pm Post subject: antennae placement: |
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| Quote: | I am at the point of placing two CI-122 bent whip antennae on the
bottom of my RV 7A. In one of his
aircraft systems CDs George Orndorff suggests that a placement
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allowing a 42 inch diameter ground plane
will give best performance and range for a comm antenna. He placed
two antennas as close to the center
line as he could without placing them in the elevator tunnel. He
placed them just to the right of the center line
with the first just behind the spar and the second a couple of feet
behind. His concern with placing them, as I
have seen on some RVs, parallel to each other just in front of the
spar was that the performance might
suffer particularly to the right of the right antenna or to the left
of the left antenna where the ground plane
would only extend about eight inches. That being said I think it
probably looks nicer to have them parallel.
Questions:
When the wings are mounted do they count in the measurement of the
ground plane thus eliminating the chance
for poorer performance laterally?
Has anyone had experience that might confirm or deny parallel or in-
line antenna performance?
Thanks in advance
Dave Cudney
Don't 4get the Riverside Airshow is coming up on March 31
Those RVers who would like to are invited to come by the
Hangar (GM 1 just west of the tower) for Hamburgers and
Hot dogs. It is also a great place to view the Airshow.
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