[Elecraft] K3 internal noise?

[Jim Rhodes]

I have some of the stripes, although they are less pronounced with the
KIO3B upgrade installed. And just checking I only see one at about 950 hz
and a weaker one at about double that. At triple that it is very faint. I
don't hear anything though so I have always assumed it was in the received
audio. Before I installed the new i/o boards I had about the same thing you
describe,  again I  never heard anything on the speaker audio so assumed it
was a sound card artifact as it didn't seem to interfere with reception.

Jim Rhodes
K0XU

On Tue, Nov 12, 2019, 20:59 N4ZR <n4zr at comcast.net> wrote:

> I have been noticing for some time that my N1MM/K3/Airspy HF+ shows some
> peculiar artifacts on the N1MM+ spectrum display.  Here's a pic.
>
>
> Anyone else seeing the same thing?  The "pinstripes" are at 1-KHz
> intervals, and the clusters are 22 KHz apart.  The stripes vary somewhat
> in strength, and the loudest ones can sometimes be heard very weakly.
>
> My K3 has the new synthesizers.  This isn't an operational problem -
> just curious. They are definitely coming from the K3, and I believe they
> are being generated inside the radio, because they remain unchanged when
> I disconnect the antenna
>
> --
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at<http://reversebeacon.net>, now
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>
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