>Sri for delay - been away.
>
>Rich said:
>
>>Tuners need only a reflectometer to indicate when zero reflected power is
>>obtained during adjustment.
>
>Generally speaking, I agree with Rich. However, some tuner circuits can be
tuned
>up to have a very low input SWR and no output, with the tuner losses being
>transformed up to 50 ohms. The result is that the smoke gets let out of the
>tuner parts - or the solder out out of the joints! Of course, these tuners
>can also be tuned to have a very low input SWR because they're doing the job
>correctly.
? an example of such a tuner, please ?
>
>This effect is more common on the 'match anything anywhere' type design.
>If you
>use the classic link coupled input to a parallel or series tuned balanced
>circuit, the effect is less likely.
? I had a link-coupled tuner (a Johnson Matchbox). It had about 1/15
of the matching range of a garden-variety balanced L-network, so I sold
it cheap.
>...
cheerz, Peter
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
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