[Elecraft] attenuator in amp was Re: K3 and Expert 1K-FA

[Wes Stewart]

Couldn't agree more.  Especially the split-band processing part :-)

http://k6mhe.com/n7ws/S_PROC.pdf

BTW, arguably one of the best sounding SSB rigs around, the TS870 does use split-band speech clipping done in DSP.  I bought mine new in 1998 and it's a "late" S/N.

Wes  N7WS

--- On Wed, 4/21/10, Tom W8JI <w8ji at w8ji.com> wrote:

> Better yet, why are most radios made the way they are? Put
> the SSB ALC entirely in the audio system. For example we 
> could split-frequency process the audio with far more 
> effective results and less intermodulation or harmonic 
> distortion  than any type of RF clipping or
> compression. The VOMAX did that, although not nearly as well as we could do with a DSP system, in the 70's or 80's. We should be doing
> all the gain control and processing at audio.
> 
> Trying to fix transmitter issues at the amplifier by 
> wrapping the amp back into the transmitter controls just 
> doesn't seem logical. RF clipping or limiting, unless it is
> gain reduction with a PIN diode attenuator, doesn't make 
> much sense to me.
>