I ran the procedure once. Like all radios, I suspect the oscillator is temperature sensitive, subject to drift over time, and has small production variations. I suspect that is the reason for the feature. My radio is inside, at 68 degrees. If I used outside on the patio all the time, I could see how I would have to run it more often.
Now I'm wondering what would happen if one of these "modern day" chips were place in a crystal oven.
