[TenTec] OMNI VI Transmit IMD

[James Duffer]

snip
>Geesh, it sounds like we are tying to get -80dB IM3 performance. That
>simply isn't the case!
>
>A zero-bias class-C amplifier can do almost as well as some modern
>radios for IM3 performance. Is it really too much to ask that radios
>be 10 or 20 dB better than class C performance?
>
snip

Is zero-bias synonymous with Class C ????  I was under impression that 
operation of Class C required the amplifying device to be biased beyond 
cutoff allowing conduction for a portion less than 180 degrees (typically at 
the peaks of the input signal -- 90 degrees).  Does zero bias do 
this.....maybe for some devices????.  Zero bias would seem to be more of a 
Class B operation.....Please elucidate.

73, Jim, wd4air

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