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Hidden feature: The Tecsun PL-880 has a sync detector
While evaluating the Tecsun PL-880 this afternoon, I discovered a hidden feature: synchronous detection.
By pressing and holding either the USB/NORM or LSB/NORM buttons, you can make the PL-880 sync lock on either the upper or lower side band. By pressing either button momentarily, it simply puts the mode in either upper side band or lower side band.