I am having a problem with my U3S on TXCW mode. It sends CW and other modes OK if running from the internal programming eg. it transmits my callsign by itself. However it will not TX CW using the right button/external CW key (using TXCW mode). The right button functions correctly so the wiring is correct. I don't think the frame time is anything to do with it as I can wait until the minutes are as set and the problem is still there. I used to be able to use TXCW but maybe there is a setting that I may have changed and forgotten about.
Any ideas?
