"Lancer" wrote in message
...
On Tue, 28 Oct 2003 23:10:42 GMT, "BuckEye" wrote:
I agree to all of the above except a 1/4 wave is a 1/4 no matter what. A
so
called loaded 1/4 is a loaded antenna not called a 1/4 anymore. Once a
antenna has been shortened by any means, shorter than the physical 1/4
wave
antenna ( 1/4 wave including the velocity factor ), top hats, loading
coil,
or ant other ways it is not clamed to be called a 1/4 wave anymore.
I did say 1/4 whip on the post, as most everybody should have known it
to
be the 108" antenna.
I don't know where Doc is heading for with his statement, but a
shortened antenna ( like the Xterminator) is 1/4 wave "electrically"
Velocity factor isn't a factor when you determine antenna length,
except certain antennas that are made from transmission line.
Maby you can explain how a antenna is 1/4 so called " electrically 1/4 " if
it is not a 1/4 wave like a 108" whip.
If it has a coil in it it, and shorter than the 1/4 it is a loaded antenna
NOT a electrically 1/4 wave equivelement .
If that was the case then a very loaded antenna that was 12" tall NOT 8'
could also be called a 1/4 wave "electrically"
What makes then a antenna 1/4 wave "electrically", because it matches the
50 coax?
Velocity factor IS importment when cutting a element to the proper
length.
Typically a antenna element can range from .91 to .99 of the true open space
length.
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