Sangean ATS-405, Руководство пользователя

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Menu operation
Through the Menu setting, you can adjust tuning
settings to achieve tuning ways that you like under
different circumstances for best performance.
Squelch
This is normal that background noise or static presents
to some degree at different locations. It is best to set the
squelch level as low as possible in order not to miss the
weak transmissions.
Squelch can be set either radio is on or off. To adjust the
squelch level, press and hold Menu button until a beep
sounds and display Menu icon appears. Press Squelch
button, display SQUELCH will flash. Using the tuning
UP/Down buttons to select required squelch level, then
press ENTER button to complete the Squelch level
setting. The radio will tune and stop at the signals above
the squelch threshold only.For example, if you select
squelch level at 6, when you tune the radio, it will stop
at the stations which signal level are above 6.
Initial setting is at OFF.
Squelch level setting should be adjusted separately in
different wavebands.