[Elecraft] K3 New AGC FW

[Wayne Burdick]

All noise blankers cause some distortion -- it's a matter of degree.  
NARrow blanking pulses and lower DSP blanker settings will cause less.

I'm surprised the AGC changes are having this much of a benefit, but  
I'm not going to complain.

Wayne


On May 6, 2012, at 6:40 PM, W0MU Mike Fatchett wrote:

> Loaded the new SW and I miss having NR.  I have been tuning around in
> the 7O piles and it is hard for me to compare as I never really
> experienced what others have.  I need to split the antenna and share
> with two K3's and see if I can hear a difference.
>
> Glad to hear the NB is working better.  The distortion to some signals
> with it on was really bad.
>
> Mike W0MU
>
> W0MU-1 CC Cluster w0mu.net
>
>
> On 5/6/2012 7:31 PM, Jim Sheldon wrote:
>> Don, Gary and the group,
>>
>> Wayne's earlier comments about the noise blanker working better  
>> turns out to be an understatement to say the least.  Not only has  
>> the clarity of signals improved by being able to tailor the onset  
>> of the SW AGC to start at a higher level and clean up many of the  
>> artifacts that created problems before, but it also allows the IF  
>> noise blanker as well as the DSP noise blanker to work more like  
>> most people's concept of what a noise blanker should be able to do  
>> and now does it with FAR less distortion to the desired signals.   
>> This includes using heavy blanking with strong signals close in.
>>
>> I've now been able to eliminate some stubborn power line  
>> interference that has been plaguing me for a couple of weeks and  
>> due to recent tornado damage a few miles South of me, the power  
>> company has not had time to find and cure it yet.  They've been  
>> busy replacing the temporary lines&  poles they used to get  
>> everyone back on line as quickly as they could after the storm.
>>
>> Now that they are on the right track, I'll bet there will be quite  
>> a few more improvements to come.
>>
>> Jim - W0EB
>>
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