[Elecraft] K3 internal noise?

[N4ZR]

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
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