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These loading coils theories
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February 7th 04, 08:07 PM
Richard Clark
Posts: n/a
On 07 Feb 2004 18:43:31 GMT,
oUsama (Yuri Blanarovich)
wrote:
They are NOT resonant at the frequencies of interest
That is like saying the coil in a tank is not resonant by looking at
the coil alone.
What a myopic way of looking at antenna design.
Loading coils are SERIES RESONANT, traps are PARALLEL RESONANT.
The only difference is where the capacitor is. For a loading coil,
the capacitor is made up of the reactance of a too short antenna. For
a trap, there is a literal capacitor, AND the reactance of the
antenna.
If the antenna had no reactance, there would be no need for the
loading coil (unless it is your next patent-applied for snow removal
device).
73's
Richard Clark, KB7QHC
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