[Elecraft] K3 CAT noise

[Paul Fletcher]

bill4570 wrote:
> 
> While operating in the PSK-31 data mode, my K3 produces a noisy waterfall
> any time CAT control is enabled.  This shows up as horizontal lines on the
> waterfall about 1 mm apart.  As soon as I disable CAT, the lines
> dissappear.
> 
> 

Bill,

I had similar problems and traced this to the shielding of the cable. I
found that the shield needed to be connected to the shell of the d-type
connector at both ends of the cable (soldered directly to the shell) to get
rid of the interference.

Hope this helps.

73 Paul M1PAF
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