What cable are you using? (also, what OS and what CHIRP version?) The FT-4X and related radios use a half-duplex connection with TxD and RxD on the same wire. The Yaesu SCU-35 cable works, of course. but if you are using another cable you may need to modify it. I use a trivial connection via resistors to the serial port on a Raspberry Pi.
I need to get back into CHIRP programming, so I guess I'll fire up my FT-4X and play some more.
On Thu, Aug 15, 2019 at 4:11 PM John Higby KJ7HEL@hotmail.com wrote:
New..Yaesu FT-4X...never been programmed, won't download & doesn't offer an Upload option. Chirp starts ...then error...failed to communicate with radio: Incorrect ACK on serial report.
ANY help appreciated.
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