> I did verify that CI-V is turned on in the radio and the address is set > to 0x66. (Speaking of which, how do I set the address in Chirp? Maybe > that's the problem...) You can't change the CI-V address in CHIRP, you'll have to set it in the radio. The CHIRP driver expects the 746 to be at address 56, so I would give that a try. --Dan