I had my FT 897 working on FT8 last winter, now I cannot key the transmitter and I do not know what changed? I use no interface, hook 1/8 plugs from panasonic toughbook (mic and earphone jacks) into DIN plug on back of 897. Receives is fine, if I unplug the earphone plug I do get tones from the internal speaker. Any thoughts on what setting I need to adjust (I wonder if its in the computer, not the radio, but n idea what was changed. I am the only one who messes with the computer, and I use it pretty much for qrz surfing during qsos and digital hf. Seem to have the same issue on fldigi and js8 call, both of which I used in the past, but only a little. What should I check?