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Old March 22nd 04, 01:54 PM
Dale Parfitt
 
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"'Doc" wrote in message ...


Dale,
I'm not disputing your claims, but what does "slightly
more integrated gain", mean?
'Doc


We sent all the commercially available omnis to the Motorola anechoic
chamber in Boynton Beach FL. Traditional shortened dipole type omnis (
loop/haloes) showed an elliptical AZ pattern- about 3dB "out of omni" as I
recall. If one only measured the gain off the front or rear this style
antenna had more gain than the isosceles triangle style omni- whose
electrical length is longer than a half wave. However if one looked at the
gain every 10 degrees or so of azimuth and averaged this over the full 360
degrees, the triangle style had more gain- again, from memory, it was about
0.5 dB better- not a lot, but in the right direction. Modeling confirms both
the pattern and gain.

Dale W4OP


 
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