[CQ-Contest] USB to Serial Port Device

[Ken Widelitz]

I want to run Writelog on a laptop and control a K3 via the W5XD
Multi-keyer. The problem I'm running into is RF hash.

I got a Byterunner USB to single Serial Port dongle for this purpose that
generates a bzzzzt every time it polls the radio. I have an older Dell
laptop with a built-in serial port that does the same thing.

I've checked the archives and found references to products that work but
nothing about products that are RF noise free.

Any suggestions?

73, Ken, K6LA / VY2TT