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Old January 8th 06, 12:18 AM posted to rec.radio.amateur.antenna
Reg Edwards
 
Posts: n/a
Default Matching network for end-fed half wave, Q calculations etc.?


Or, use an "L" network. Same number of components, and it will even

match
impedances that call for negative component values in a parallel

tuned
circuit.

W4ZCB

======================================

Actually, with an exact 1/2-wave antenna, an L-network suffers from
the same disability as does the simple L and C tuned circuit.

This is why automatic antenna tuner manufacturers, which use
L-networks, state in their operating handbooks that exactly 1/2-wave
antennas should be avoided.

But it is not an important matter. Very few antennas are EXACTLY
1/2-wavelength in length. And it is a simple matter to shift the
resonant frequency up or down a few KHz.
----
Reg, G4FGQ.