[Elecraft] K2 scratchy noise on RX CW signals

[Don Wilhelm]

Andrew,

Bypass is not "OFF", so yes it could still be in-circuit.
The only way to really find out is to re-install it and set everything 
to default.
A good exercise for a rainy/snowy afternoon.

73,
Don W3FPR

On 2/19/2022 9:04 PM, Andrew Moore wrote:
> Hi Don - thanks for the suggestion. Any idea if the scratchy audio 
> would persist if the KDSP2 was put into bypass mode? I tried that and 
> scratchy audio was still there.
>
> Thanks,
> -Andrew
>
>
> On Sat, Feb 19, 2022 at 8:49 PM Don Wilhelm <don at w3fpr.com> wrote:
>
>     Andrew,
>
>     That sounds like you had the NB and/or NR set on in the KDSP2 with
>     aggressive settings.
>     If the settings were aggressive, it would give you 'scratchy' audio -
>     but it does eliminate other unwanted signal sounds.  You might
>     want to
>     put the KDSP2 in again and try several settings - see the KDSP2
>     manual.
>     Start with all settings at default and go from there.
>
>     73,
>     Don W3FPR
>
>     On 2/17/2022 3:55 PM, Andrew Moore wrote:
>     > I replaced the KDSP2 with a newly built KAF2 today and am happy
>     to report
>     > the noise is gone. Not sure if the board swap had anything to do
>     with it,
>     > but everything sounds great now and hope that continues.
>     >
>     > Thanks,
>     > -Andrew / NV1B
>     >
>