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Pressing any key or receiving a signal will cause the radio to exit from Battery
Save and restore it to normal operation.
Time-out Timer (TOT)
Limits the amount of time the radio user can continuously transmit on a
channel. If the user holds down the PTT longer than the preprogrammed time
period, the radio will automatically stop transmitting and generate a warning
tone. To stop the warning tone, release the PTT.
A pre-alert function to warn you of the TOT expiration in advance can be
programmed via programming cable and CPS software.
Battery Strength Indicator
TC-518 allows you to simply press the programmed Battery Strength
Indicator key to illuminate the LED battery gauge, which gives different
indications representing battery strength levels. To exit the indications, release
the key.
Battery Strength LED Indication
70% - 100% Green
50% - 70% Orange
30% - 50% Red
10% - 30%
No LED indication is shown when the function key
is pressed; while the radio is in standby mode, LED
ashes red and a low-pitched tone sounds at intervals
of preset time.
Less than 10%
No LED indication is shown when the function key is
pressed; the radio can only receive or keep standby,
and transmit is disallowed. While the radio is in standby
mode, LED ashes red and a low-pitched tone sounds
at intervals of preset time. If the PTT is held down,
transmit inhibit tone would sound.
Monitor / Squelch Off
● Squelch Off
Causes the radio to forcibly unmute speaker to hear activities on the current
channel, whatever the receive condition is. The radio speaker outputs audio
when audio signal is present, or background noise will be heard if no audio
signal is detected.
Advanced Operations
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