Thanks Mike
Oh dear, more software to install!
I have WinXP and have installed uBITx Manager but have not yet used it to connect with the Raduino (nervous of screwing it up!) ... I have Linux Ubuntu 16 but have yet to get to grips with Mono in order to install uBITx Manager ... thought I was doing well to install the Arduino IDE and update the Raduino to use the KD8CEC firmware!
I'll get there eventually but my head's spinning a bit ... fortunately the KD8CEC firmware is working well for me now and I've managed some CW QSOs on 40m with the meagre 5W from my uBITx (40m can be a rather busy band to make headway with QRP!).
The ubitx.net web-site is a god-send, thanks so much providing this fantastic facility for uBITx users
73 Chris