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Old October 29th 03, 02:44 PM
BuckEye
 
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What makes a antenna so called " looks like a 1/4 wave again to the RF".

Where does it say a matching antenna must look like a 1/4 anyway.



"Add a coil to make up the missing
inductance and the antenna "looks" like a 1/4 wave again to the RF, not so,
the impedance is now very low at its feed point. Big mismatch (you forgot
the extra device now needed to match the antenna,usally a cap or coil on the
input side.so adding just a loading coil did not make it look like a
match.Notice I said a match . NOT a 1/4 wave. RF doesn't care what the
wavelength is. Where does it say a antenna must "look like a 1/4 anyway."
The same thing could be said about a base matched 5/8 wave antenna, it shows
a good match also and its is a long way from the 1/4 wave length. and is
never said it looks like a 1/4 to the RF.
Don't confuse a match to it looking like a 1/4.

There is many things that can be changed at the antenna mounting spot, 1/2
wave 5/8 wave






 
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