Well the 1.5.1 upgrade did not work for me on my 6300. Same problem. I am submitting a Help Desk Ticket because this sounds like I may have a hardware problem.
Thank you for these reports that the frequency calibration is not working as intended in 1.5.1. I have added this to our bug tracker and we are actively investigating the issue. It looks like for a subset of 6300 users, the frequency calibration is not working and we are trying to determine why. If you have this issue, in the mean time, you can manually calibrate your radio by entering the correct offset. There are several methods for doing this. One is by using the Fldigi Frequency Analysis feature (http://www.wb1gof.org/files/UsingFldigiForRigCalibrationAndFrequencyMeasurement.pdf) or by
Hey Tim, can you explain how the calibration works? Why would I get so different a reading from 1 band to another if the signals so close in strength? And what is the radio comparing frequency to when it goes thru the calibration cycle...WWV frequency... or the different tones from WWV as the clock ticks away?