Tecsun PL-880 Hidden Features Reference - Firmware 8820
FUNCTION WHAT DOES IT DO?
RADIO
STATE
WHAT KEY? WHAT BANDS? WHAT MODES? WHAT DO I NEED TO DO?
Synchronous
Detection
Enables the Synchronous
Detector
ON
USB/NORM
LSB/NORM
AM (MW, LW)
SW
USB,LSB
1. Press and hold the 'USB/NORM' or 'LSB/NORM' key until 'SYNC' appears
2. Press the key again once to change back
Additional
Features
Enables Muting Threshold
& DNR features for MW,
LW & SW
ON 4
AM (MW, LW)
SW
AM, USB,
LSB,SYNC
Hint: The Additional Features key '4' MUST be set to 'ON' before the Muting Threshold (Key '9') or DNR (Key '6') will
work on MW, LW & SW.
Press and hold key '4' to toggle Additional Features ''ON' and 'OFF'
DNR
Enables Dynamic Noise
Reduction
ON 6
AM (MW, LW)
SW
AM, USB,
LSB,SYNC
Hint: The Additional Features key '4' MUST be enabled before this will work. DNR auto adjusts bandwidth.
Press and hold key '6' to toggle DNR 'ON' and 'OFF'
Muting Threshold
Allows adjustment of the
squelch threshold,
reducing the muting of
weak stations
ON 9
FM
AM (MW, LW)
SW
FM
AM
USB
LSB
SYNC
Hint: The Additional Features key '4' MUST be enabled before this will work on MW, LW or SW.
1. Select a band/mode (FM, AM, SW, USB/LSB or SYNC), each band/mode has its own setting
2. Press and hold key '9' until the current level flashes in the main display area
3. Adjust with either tuning knob (the best setting should be '00')
4. Press key '9' to save
FM De-emphasis
Alters the time setting for
FM De-emphasis
ON 5 FM FM Press and hold key '5' to toggle between '75.US' (USA Setting) and '50.US' (European Setting)
Line Output Level
Adjusts the audio level on
the line output socket
ON 7
FM
AM (MW, LW)
AM
USB
LSB
SYNC
Hint: This setting does not work on SW, only FM, MW & LW. You will notice FM & AM (MW, LW) have independent line
output level settings. This setting also affects the current volume level setting.
1. Press and hold key '7' until the current level flashes in the main display area
2. Adjust this setting with either tuning knob
3. Press key '7' to save
Calibrate
USB/LSB
Allows calibration of each
sideband
ON SNOOZE
AM (MW, LW)
SW
USB
LSB
Hint: Although this may calibrate USB & LSB for the displayed band, you may find that on a different frequency band you
have to recalibrate. You can carry out this procedure on USB or LSB as each sideband has its own calibration value.
1. Tune in a strong AM (MW, LW) or SW station
2. Press 'USB/NORM' to switch to upper sideband
3. Adjust the fine tuning until it's zero-beated and the pitch matches AM
4. Press and hold the 'SNOOZE' key until the '00' correction value appears, calibration is now complete
External antenna
on MW or LW
Switch from the internal
MW & LW ferrite antenna
to the external 'SW ANT'
antenna socket
ON VARIOUS AM (MW, LW)
AM
USB
LSB
SYNC
Hint: In most cases a 'RESET' was required to get this feature to work correctly on firmware 8820. You can only tune
upwards with the tuning knob or it will jump to 29999kHz, so set the frequency correctly before proceeding. You may also
notice a leading '0' is added to the frequency if it's below 1000kHz and 'SW' appears on the display. This looks like it's
actually extending the SW band below 1711kHz. Only the main tuning knob will tune upwards if in USB/LSB/SYNC
modes. Use the main tuning knob in AM mode for 5kHz steps or the fine tuning for 1kHz steps (same step sizes as SW).
1. Switch to MW or LW (AM) and tune to a frequency of your choice
2. Press 'USB/NORM' (USB mode on)
3. Press the 'AM' key ONCE (or TWICE if the LW feature is enabled, or you will end up on the wrong band)
4. Press 'USB/NORM' key (USB mode off)
5. Press the 'FM' key (Don't worry about the frequency)
6. Press the 'USB/NORM' key (USB mode on)
7. Press the 'USB/NORM' key again (USB mode off)
You can now toggle between the internal and external antenna by pressing 'AM' and either of the 'SW' keys.
To return to normal operation tune down on either tuning knobs.
Firmware version
and date
Display the radio firmware
version and date
OFF AM BW N/A N/A
1. Press and hold 'AM BW' until the display turns on all of the LCD segments, then release it
2. Press and hold 'AM BW' again to get the firmware version, then release it
3. Press and hold 'AM BW' one more time for the firmware date, then release it
Seconds on clock
Add seconds to the clock OFF 8 N/A N/A Press and hold key '8' to toggle the seconds ON and OFF
Display light
Toggles the display light
ON (AUTO) or OFF
OFF 5 N/A N/A
Hint: This is an alternative to switch the display light ON or OFF, rather than using the slider switch on the right hand side
of the radio, although 'OFF' in this mode is permanently off and 'ON' is the same as 'AUTO OFF' using the slider switch.
Press key '5' to toggle the display light ON or OFF
Battery low
voltage shutdown
level
Sets the Li-ion battery low
voltage shutdown level to
3.4v, 3.5v, 3.6v or 3.7v
OFF 4 N/A N/A
1. Press and hold key '4' and adjust with either tuning knob
2. Press key '4' to save the setting
Radio Runtime
Displays how long the
radio has been on
OFF VF/VM N/A N/A
1. Hold 'VF/VM' for approx. 2 seconds
2. You will now see how long the radio has been running since the last battery charge or reset, shows hours & minutes
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