FUNCTI ON WHAT DOES IT DO? RADIO STATE WHAT KEY? WHAT BANDS? WHAT MODES? WHAT DO I NEED TO DO?
Bluetooth
Enable Bluetooth to playback music
from a Bluetooth enabled device
(e.g. smartphone, tablet or digital
audio player).
OFF RADIO/MP3 N/A N/A
Hint: After enabling Bluetooth, press [ RADIO/MP3 ] to sw ith between radio,
audio player and Bluetooth.
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 fl ashes in the main dis play area
3. Adjust with ei ther tuning knob (the best setti ng should be '00')
4. Press key '9' to save
Add ition al Featu res
Enables Muting Threshold & DNR
features for MW, LW & SW
ON 4
AM (MW, LW) SW AM, USB, LSB
Hint : The Addi tiona l F eat ures key ' 4' MUST be set to ' ON' bef ore the Mu ting
Threshold (Key '9') or DNR (Key '6') will work on MW, LW & SW .
Press and hold key ' 4' to toggle Additi onal Features ''ON' and 'OF F'
DNR Enables Dynamic Noise Reduction ON 6
AM (MW, LW) SW AM, USB, LSB, SYNC
Hint : The Addi tiona l F eat ures key ' 4' MUST be enabl ed be fore this w ill work.
DNR auto adjus ts ba ndwidth .
Press and hold key ' 6' to toggle DNR 'O N' and 'OFF'
Mutin g Threshold
Allows adjustment of the squelch
threshold, reducing the muting of
weak stations
ON 9
FM
AM (MW, LW) SW
FM, AM, US B, LSB
Hint : The Addi tiona l F eat ures key ' 4' MUST be enabl ed be fore this w ill 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 fl ashes in the main dis play area
3. Adjust with ei ther tuning knob (the best setti ng should be '00')
4. Press key '9' to save
FM De-emp hasis
Alters the time setting for FM De-
emphasis
ON 5 FM FM
Press and hold key ' 5' to toggle between ' 75.US' (USA Setting) a nd '50.US '
(European Setting)
Line Output Level
Adjusts the audio level on the line
output socket
ON 7
FM
AM (MW, LW) , SW
AM, USB, LSB, SYNC
Hint: You will notice FM & AM (LW, MW, SW) 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 fl ashes in the main dis play area
2. Adjust this setting w ith either tuning knob
3. Press key '7' to save
Calibrate US B/LSB Allows calibration of each sideband ON PLAY/ PAUS E & 8
AM (MW, LW) SW USB, LSB
1. Tune in a strong AM ( MW, LW) or SW station
2. Press 'LSB' or 'US B' to switch to upper sideband
3. Adjust the fine tuning until it's zero-beated and the pitch m atches AM
4. Press and hold the 'Play/Pause' key until the '00' correction value appears
and press '8' to save, calibration is now complete
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
Firmware v ersion
Dis play t he radi o fi rmwa re vers ion OFF AM Bandwidth + & USB N/A N/A
Press and hold key "AM Bandwi th +" until all indicators s how up on the display
and then press and hold key "USB" for 5 seconds.
Firmware v ersion
(Tecsu n intern al use)
Nothing in particular OFF AM Bandwidth - N/A N/A Apparently this is just information for Tecsun's engineering team.
Tecsun PL-990(x) Hidden Features Reference
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