[Elecraft] help whit KDSP

[Lyle Johnson]

Oscar,

As I recall, one of the tantalum capacitors on one of the voltage regulators on the DSPx module can fail with this sort of noise as the symptom.

It has been many years since I dealt with this product so I apologize that I can’t specify which capacitor. 

73,

Lyle KK7P

Sent from my iPhone

> On Apr 25, 2025, at 19:21, Oscar Castillo <xe2hum at gmail.com> wrote:
> 
> I have a K2 with the KDSP option, but it started making a popping/crackling noise a while ago. It wasn't that bad at first, but it's becoming more and more annoying. It's more intense on CF2 and CF3, less on CF1 and no noise on CF4. If i turn the NR on, goes away. On SSB everything is fine, no noise at all, only on CW
> 
> my settings are
> 
> CF1 - LPASS
> 
> CF2   60  50
> 
> CF3   60  25
> 
> CF4   60  10
> 
> nr    97   30
> 
> Cn  G   0.0
> 
> CF  G   2.0
> 
> NR LEVEL 1
> 
> Any clue where the noise como from?
> 
> any recomended settings for the DSP?
> 
> thanks a lot!!
> 
> Oscar XE2IF
> 
> 
> 
> 
> 
> 
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