[Elecraft] K3 Receiver mush

[W0MU Mike Fatchett]

I can run with 400 or 250hz filters.

I have tried it with AGC fast, slow off etc.

I just think this is something that most people just never see. This was 
a major point of discussion a while back.  I guess it is just the way 
the radio is.  I will have to try another rig to see if I notice the 
same effects.

In a pileup there is no offending station they are all calling me.

I was just curious if other contesters or DXpeditioners settings might 
be and if they are still seeing this issue.

W0MU



On 2/21/2017 8:48 AM, Don Wilhelm wrote:
> Mike,
>
> Think about it - if there are multiple signals in the passband, the 
> AGC will respond to the strongest, there is just no way around that fact.
> If the signals can be separated by the DSP, and one is really strong, 
> that strong station may be activating the Hardware AGC. The only 
> solution for the latter is a more narrow roofing filter - put the 
> offending strong signal out of the passband of the roofing filter and 
> use shift to get your sidetone for the desired signal back in order.
>
> That may be too much "fiddling" for a run station in a contest, but it 
> is a viable way to operate when trying to copy a weak station working 
> close to a strong station.
>
> 73,
> Don W3FPR
>
> On 2/21/2017 9:25 AM, W0MU Mike Fatchett wrote:
>> We noticed again during the contest hat when 3 or 4 stations called, all
>> those signals would be flattened to the same level. Once you got to
>> where one or two stations were calling the signal level would pop up
>> substantially.
>>
>> I have played endlessly with slope and threshold with little effect.
>>
>> My K3 has the new syn boards as well and filters from 2.8 to 2.5.
>> Latest firmware etc.
>>