Many thanks to Dan who learned, via the Tecsun PL-880 group, of another way to calibrate the PL-880 in upper and lower sideband. This method seems to be a little easier than a previously posted procedure.
Anna, with Anon-Co, translates this procedure given to her by Tecsun technicians:
- Place the Tecsun PL-880 in LSB or USB mode
- Tune to an AM broadcast station and zero-beat the signal (fine tune it until the signal has no SSB distortion and voices/music sound natural)
- If the last two digits of the frequency are not “00”, this means there is some display deviation
- Simply press and hold the [SNOOZE] button for about one second or so to calibrate the last two frequency digits, which will show “00” when successful.
I will try this procedure later today by re-calibrating my PL-880.
Dan has also noted what many others have–that the PL-880 “is sensitive to both power levels, and time in the powered on state, and will vary by some hz up and down the bands
no matter what one does to zero at any particular point.”
Has anyone else experienced this?