Bob, You must use a fully wired RS232 serial cable. Just wiring three leads will not work. Regards, Jack ----- Original Message ----- From: "Bob Main" <bobmain1 at alltel.net> To: "DXBase" <dxbase at mailman.qth.net> Sent: Friday, February 11, 2005 10:57 PM Subject: [Dxbase] COM Port Wiring I have a Yaesu Mark V and a Kenwood TS-870 as my backup. I want to wire the Kenwood to another COM port on the computer so I can control it through DXBase. It appears that pins 2, 3 and 5 are the only ones needed. What I need to know is are pins 2 and 3 straight wired or are they swaped? Thanks, Bob KB4CL ______________________________________________________________ Dxbase mailing list Home: http://mailman.qth.net/mailman/listinfo/dxbase Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Dxbase at mailman.qth.net