开云体育

Hi Mark,

The heated 30MHz master crystal will drift over time as it (and other components like the pulling caps) age. After almost 40 years this drift will probably be signficant (it certainly was in my FT-980). I included an article in the "Repair" folder in the files section on how to "re-calibrate" it, along with what to do if the drift exceeds the stock trimmer-cap adjustment capability.

-Mat
N8TW