[Elecraft] K3 DSP AGC Question

[Joe Subich, W4TV]

> Likely?  I don't know. 

Likely is a better choice since raising the AGC threshold 
seems to be the primary goal of much of the "PRE/ATT/RF 
Gain dance" we've seen recently. 

The hardware AGC (HAGC) would seem to provide an ultimate 
limit on level to the ADC - unless the ADC can't handle 
the transient peaks - so a higher threshold for the DSP 
derived AGC would be helpful in many ways. 

73, 

   ... Joe, W4TV 
   



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Lyle Johnson
> Sent: Monday, February 08, 2010 11:24 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 DSP AGC Question
> 
> 
> Hello Joe!
> > Assuming that the threshold values have not changed in a major
> > way since Jack's measurements, would it be possible to extend 
> > the range of threshold values - say to AGC THR=016 at about 
> > -80dBm (assuming 2 dB per step)?  
> >   
> 
> Possible?  Yes.
> 
> Likely?  I don't know.  There are a lot of side effects that 
> happen when the threshold is raised...
> 
> 73,
> 
> Lyle KK7P
>