Hidden feature: Calibrating the Tecsun PL-880 on medium wave

This hidden feature was described by Diemtar on the Tecsun PL-880 Yahoo Group:

1. Tune to a strong medium wave (AM broadcast) station
2. Turn on on SSB mode USB/LSB
3. Move the fine tuning control until you have a good SSB signal (i.e. obtain a good zero-beat of the AM station)
4. Press and hold the Snooze Button, now you see a correction value in the display
5. Press the Snooze Button again.

I just tried this on my PL-880 (firmware version 8820) and it worked well.

Many thanks, Dietmar!

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