[AMPS] Receiver performance

[Tom Rauch]

Hi ian,

> When doing a comparative review of several DSP audio filters, I found that
> most - but significantly not all - units gave good CW filtering
> performance right down to the lowest signal/noise ratios. I had been
> expecting to hear "on or off" quantization effects at low levels, but
> there was no sign of that because the noise added random dither to the
> incoming signal and avoided the threshold effects. The "noise reduction"
> feature was universally useless at low signal levels, as you might expect.

That's because the filters you tested are after the receivers analog 
selectivity. Look at the 756PRO reviews coming out, where it is 
compared to things like the 1000MP.

 
73, Tom W8JI
w8ji@contesting.com

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