[Elecraft] KX3 with NaP3 USB Noise

I've purchased a USB Creative Blaster X-FI Pro for use with my Acer Win 7 laptop with the intention to use it with my KX3 driving NaP3. This works fine until I connect the Elecraft supplied KX3 USB serial cable to provide CAT control of the, when connected it introduces unacceptable noise in the

Re: [Elecraft] KX3 with NaP3 USB Noise

Hi, I used transformers for isolation, which worked fine. Did not need anything else. 73, matt W6NIA On Mon, 29 Jul 2013 10:59:41 +0200, you wrote: I've purchased a USB Creative Blaster X-FI Pro for use with my Acer Win 7 laptop with the intention to use it with my KX3 driving NaP3. This