On Wed, 31 Mar 2010 10:17:13 -0400, Gary Schafer wrote:
>It is not resonant at the
>harmonic frequency and acts just as a low pass filter with a low source
>impedance at the output of the amp at the harmonic frequency.
As noted in my tutorial, that's true for some amps, but not for others. For
MANY amps, the last output filter element is a series inductor, making it a
relatively high impedance at the harmonic. For such an amp, the best place
for the stub is very close to the amp. The tutorial includes a matrix listing
many popular amps, thanks in part to feedback received when I asked about
amps on this reflector several months ago.
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