On Thu, 26 Oct 2000 00:18:55 -0700 measures <2@vc.net> writes:
>> Today we should ask for a bit better fidelity. -40dB is a good
>>benchmark.
>>
>Typical solid state radios are not this good.
True! And it is a shame that they aren't!
>A two tone test will not reveal the flaw in the DAF design because it
>applies constant screen potential.
If the DAF is built per the original design, with a time constant in
the screen circuit that will allow the screen voltage to follow the
envelope of the SSB signal, then a two-tone test will give valid results.
If the screen voltage TC has been modified, such that a constant
screen voltage is seen with a two-tone signal, then you no longer have a
DAF amplifier.
73,
Marv WC6W
*
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