What does (Prod. run 5 or modified) mean for the FT847 in DX4WIN. I have the Null Modem cable but doesn't work in DX4WIN. My Serial Number is: OK440154 on the back of the radio. Do I need some modification done? Thanks- John EMAIL: john at w9rpm.com WEBPAGE: http://www.w9rpm.com/ AOL IM: W9RPM