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Old December 6th 07, 03:19 AM posted to rec.radio.amateur.antenna
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Default Loading Coils; was : Vincent antenna

Richard Fry wrote:
The fact that adding a coil to an 11-degree radiator produced the system
reactance a 90-degree, unloaded, linear radiator does not mean that the
coil and its junction to the stinger have supplied the "missing
electrical degrees" to the antenna system. The RADIATOR is still only 11
degrees long, and will have same radiation resistance and relative field
pattern, regardless of the coil. The coil only supplied a non-reactive
condition at the system feedpoint.


I don't know how many times I've said this discussion
about current distribution in a loading coil doesn't
have anything at all to do with the radiation pattern.

The effort spent here in bitter argument about phase shift through a
coil, and missing degrees would be better spent on methods of improving
the radiation resistance of such systems, and reducing the matching and
r-f ground losses that limit their performance.


That may well be true. Please feel to start a thread
with that subject matter.
--
73, Cecil http://www.w5dxp.com
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