[Elecraft] CW Mush

[David Gilbert]

Unless I'm misunderstanding something here, the answer to your question 
is pretty basic.  There is a kink in the curve where the AGC kicks in.  
Signals that traverse that kink see a nonlinearity.

I set the threshhold pretty high, and I set the slope as low as I can in 
order to minimize the amount of that kink.

Dave  AB7E


On 7/2/2020 5:09 PM, Wes wrote:
> Please explain to me where this non-linearity is generated. If 1 volt 
> of RF (really I-F) gain reduction causes 10 dB of gain reduction, prey 
> tell what difference does it make if the 1 volt is generated by an AGC 
> circuit or a manual control?  Either way, *all* signals are reduced 10 
> dB. What's non-linear about that?
>
> Wes  N7WS
>
> On 7/2/2020 3:18 PM, David Gilbert wrote:
>>
>>
>> What are your AGC settings?  I have a K3 with the new synths and I 
>> use almost the least AGC possible ... THR = 12 and SLP = 000.
>>
>> AGC creates non-linearity, the non-linearity is most pronounced at 
>> the signal level where it kicks in, and non-linearity creates 
>> mixing.  Do the math for the sum and difference frequencies when you 
>> have multiple signals very close to each other within the receive 
>> passband.
>>
>> 73,
>> Dave  AB7E
>
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