That was 3 months ago.
One problem with the multi-band tuner is that you have to make sure that
when you are tuned to one of the lower frequency bands the high frequency
components are also not producing a resonance at a harmonic. They must be
staggered. This does not affect an antenna tuner version so much but when
used as the output impedance matching and tuning network for an amplifier
it is very important. Also, a single ended version is easy to make using
half the parts.
73
Bill wa4lav
At 10:15 AM 3/23/2007 +0100, you wrote:
>Hsu wrote:
>
>>I'm very very interested in that "All band turner", I want to know the
>>datail.
>
>>> This is the
>>> diagram.http://www.cnham.net/bbs/attachments/21_pMmRpMPg6BQE.jpg,
>
>This multiband circuit was popular in some equipment. Basically, there is
>a parallel LC circuit with a serie LC in parallel to it.
>
>This same basic circuit is used in the Z-match. Have a look using your
>prefered search engine in order to see more references.
>
>73 de Claude
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