A number of times I've had the situation in digital mode where the QMX is not transmitting as expected. I immediately get concerned that something is blown. The last time this happened I connected a dummy load and went to the diagnostic screen in terminal mode and still no transmit. Only then did I think, oh, maybe transmit lockout. Sure enough, cycle the power and its back working again. I wish there was some indication on the screen for transmit lockout. I've blown so many finals in the QCX and QDX that my first thought is always something has failed.?
Are you running the latest firmware? In the latest firmware, in the diagnostic screen there's a reason indicated, above the transmitter testing section in the bottom right, whenever transmitting is not occurring. It can be things like the VFO is outside a defined band (and TX outside band limits is disabled); or TX is disabled on the band you are on. Most common is that SWR protection?has been triggered, which would be indicated by an 'S' on the screen.?
I don't know of any situation where the radio can be locked from transmitting but there is no displayed indication of why.?
