Sorry All. Have searched further and found this is a 3rd party problem. [ Luciano S. 24 Dec 2016] At least it's not my problem... moving on and will continue to use ssh

Somewhat frustrated and lost for a solution. If I ssh in from Apple Terminal on my MBA all characters are echoed - doesn’t appear to be a host keyboard problem. Using this connection, I can load python, use the ‘-‘ char and ctl d, exit etc. I have done factory resets on omega2+ and followed through to end of setup, but still the problem persists. I have also downloaded the ‘omega2.bin’ (renamed) from the repo and installed the firmware from USB - that much worked OK but the omega terminal will not recognise hyphen (minus) or underscore. I have reloaded the BusyBox terminal using ssh opkg install onion-console-terminal and it echoes positive result. Still no minus or underscore characters recognised. The cursor does not move or respond in any way, just waits for any other keystroke.

Any help would be greatly appreciated.

@Patrick-Nou I had a similar problem trying to connect. It turned out to be the micro USB cable could not pass sufficient current to drive the Omega Tx. A better cable with higher DC cable spec did the trick. All good. Cheap is not always the best.