Sangean PR-D4 (R2) - Manual (Page 13)

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Setting Tuning step
6. After the FM range setting is completed, the display will switch to
tuning step setting. Press the Tuning up/ down button to choose
the desired FM tuning step (50 kHz or 100 kHz) and press the
Band/ step button to confirm the setting.
7. After the confirmation of FM tuning step, press the Tuning
up/ down button to choose the desired AM tuning step (9kHz or
10 kHz) and press the Band/ step button to confirm the setting.
Factory reset
If you wish to completely reset your radio to its initial state this may
be performed by following this procedure. By performing a factory
reset, all user entered settings will be erased.
Press and hold Preset 5 button and the Power button together until
‘dEF’ shown on the display followed by an beep. Now the factory
reset is completed.
Headphone socket
A 3.5mm headphone socket located on the left-hand of your radio
is provided for use with either headphones or an earpiece.
Inserting a plug automatically mutes the internal speaker.
Warning:
Excessive sound pressure from earphones and headphones can
cause hearing loss.
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