[+] MYSTERY FEAURE #1
Press & hold the [+] button until a number appears The
reported numbers are “1000” and “1001”. It is unknown what
these numbers are for. at the time of this writing.
ADDITIONAL SYSTEM SETTINGS
These features don't work on my PL-880, but they have
been reported to work on other receivers,
[MW] EXTERNAL MW/LW ANTFNNA
This feature switches from the internal AM/LW ferrite an-
tenna to the external SW antenna.
Radio on. .Press [AM] and tune to any frequency. Press
[USB/NORM] to turn USB on. Press [AM] to select the MW
band, if the LW feature is ON (see [2] above) then pressing
this button will switch to the LW,band, press [AM] again to
switch back to the MW band. Next, press [USB/NORM] to
turn off USB. Press the [FM] button then press the [USB/
NORM] button to turn on USB then press [USB/NORM]
again to turn USB off. You can now switch between the
internal and external antenna by pressing the [AM] button
and either SW button.
You can only tune upward or the frequency will jump to
29999 kHz. Only the main tuning knob can be used if you
use the USB/LSB/SYNC modes, otherwise use either tuning
knob for 5 kHz and 1 kHz steps. To return to normal
operation simply tune downward using either tuning knob.
In most cases it is necessary to RESET the radio to get this
to work correctly on firmware version 8820. For frequencies
below 1000 kHz a leading '0' will be added to the frequency
and SW will appear on the display making it appear as if the
SW band has been extended below 1711 kHz.
[SW] 1.0 kHz BANDWIDTH FILTER
†
Radio on and select any SW band. Turn on [4] ADDITIONAL
FEATURES if it is OFF. Then adjust the [9] MUTING
THRESHOLD to 13 or more (but not less then 10). Now turn
OFF ADDITIONAL FEATURES then turn it back ON by
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