Hi, The AS1289 is useful for selecting antennas when operating remote, but when on site, sitting next to the gear, I would like to operate the AS1289 with some simple push-buttons. I see in the manual for the AS1289 that the switch can accept messages from different, rigs to automatically select antennas depending on what band is selected. My idea to achieve local push button control of the switch is to add something like a small Arduino or similar, and convert push-button closures to a serial message and send it into the AS1289, where rig band data normally would be sent into. Is it possible to get the pinout for the serial port header, and the protocol for that serial port. Best 73 de SM2SXA /Urban
