AGC performance on ms-duration pops

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AGC performance on ms-duration pops

Bill VanAlstyne W5WVO
One of the knocks I've heard from knowledgeable people like Rob Sherwood on most of the new DSP-generation radios is that DSP-driven AGCs won't tolerate/ignore short-duration (~1ms) high-amplitude transient pops without kicking in to reduce gain every time one occurs. Will the AGC settings described earlier allow the AGC to be set up to tolerate certain characteristics in the energy waveform (like a very fast rise-time) while responding to others?

Bill / W5WVO
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Re: AGC performance on ms-duration pops

wayne burdick
Administrator
Bill W5WVO wrote:

> One of the knocks I've heard from knowledgeable people like Rob
> Sherwood on most of the new DSP-generation radios is that DSP-driven
> AGCs won't tolerate/ignore short-duration (~1ms) high-amplitude
> transient pops without kicking in to reduce gain every time one
> occurs. Will the AGC settings described earlier allow the AGC to be
> set up to tolerate certain characteristics in the energy waveform
> (like a very fast rise-time) while responding to others?

Yes. The DSP works in conjunction with hardware AGC to smoothly handle
signals like this. In addition the K3's hardware noise blanker would
remove such "pops" when enabled. It has a variable threshold, so you
could leave it on and set for a high threshold if random pops were an
issue on a given band.

73,
Wayne
N6KR


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