I have a ICOM 756ProIII. When in SSB sometimes I hear a tone in receive mode. When in CW and the transmit button is pressed I hear the same tone and this time the transmitter keys
I have noticed that if I press on the ELEC-KEY plug (without anything plugged into it) I can, with very little pressure, get the radio to key or create the tone, depending on the mode I am in. Is anybody aware of a common failure mode to cause this before I crack the case open and look?