Wintec LP-4502+, User Manua

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7
F5
Tx / Rx Different Channel Mode ON / OFF
Under menu item 5, Tx / Rx Different Channel mode
ON/OFF can be selected. While this mode is on, if receiving
is on any normal channel, the transmission channel will be
memory channel or the vice versa.
Factory default: OFF
F6
Keypad Tone ON / OFF
Under menu item 6, select ON / OFF to enable / disable the
beep sounds. When OFF is selected, the keypad tone / alert
sound and power ON / OFF sound will be turned off.
Factory default: ON
F7
Auto Power Off
Under menu item 7, choose OFF / 30 / 60 / 120 min.
depending on your need. If 30 is selected, the radio
automatically turns the power off if none of the keys are
operated or no signal received after 30 min.
Factory default: OFF
F8
Transmit Time Out Timer
Under menu item 8, choose OFF / 30 / 60 / 90 / 180 / 360
depending on your need. If 30 is selected, with icon
flash, the radio will stop transmission if continues talk
exceeds over 30 sec. and radio will automatically swift to
receiving mode. The continuous beep warning and the
icon flashing will continue until [PTT] is released.
Factory default: 90 sec.
F9
Squelch Setting
Under menu item 9, choose squelch level 0 to 7 depending
on your need. If the squelch level is at 0, the static sound is
heard all the time. If set at level 1, the radio is best to pick up
weak signal but susceptible to interferences. Squelch level 7
is the least sensitive and suited for use against high
interferences.