[Elecraft] RS232 A/B box

[Art Nienhouse]

One solution might be a RS232 A/B if you need the K3 utility switch it 
to A when you want the NaP3 or what ever else switch it to B.
http://www.amazon.com/DB9-Female-Way-Switch-Box/dp/B002J0OTTC/ref=sr_1_2?ie=UTF8&qid=1344373302&sr=8-2&keywords=serial+switch+box

Regards
Art
ka9zap