[Elecraft] K3 built in sound card and RF

[Bob McGraw K4TAX]

Probably you will need a good shielded USB cable and may need to add a 
clamp on ferrite choke on the cable close to the computer.    I went 
through 4 different brands of cables and types of USB cables before I 
found one that didn't have issues.   The one I ended up using does have 
"shielded" printed on the outside of the wire.

I think you likely had RF in the shack before, but it didn't show up 
until the additional communication path was added.

73

Bob, K4TAX


On 11/16/2018 11:22 AM, Jerry Muller via Elecraft wrote:
> All:    Recently I sent my k3 into get the sound card and second rcvr put in.  Upon receipt of the unit I plugged it back into the same connectors I had previously used with the exception of the NEW USB cable connection to the CPU/K3/P3. I now have tremendous RF in the shack which was not there before sending in the unit. Any help would be greatly appreciated.
>
> Gerald Muller K9GEMGMuller885 at aol.com
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