Searching the interwebs, someone else asked this question on a forum and everyone misunderstood the guy's question - my question is nothing to do with being able to tick "Hold Tx Freq" or setting the Tx and Rx frequencies independently. When I am in FT8 mode, using WSJT-X with the IC-7300, and the Tx and Rx frequencies are for example both set to 1000 Hz, and the transmitter in receive mode is showing 14.074.00, when the rig goes into Tx mode the frequency readout moves down to 14.073.500, which I assume means I am transmitting 500Hz lower. Is this normal? I have the feeling it didn't previously do this, but I can't remember if I checked the transmit frequency previously. I have been on FT8 since xmas and have made hundreds of successful FT8 and FT4 contacts btw, so this is not an initial set-up issue.