TC-508 Owner’s Manual
13
Functions and Operations
CTCSS/CDCSS
CDCSS/CTCSS can be used to prevent unwanted conversations at the same frequency. If
CTCSS/CDCSS is set on a certain channel, you can only receive voice calls from radios with matching
CTCSS/CDCSS. Otherwise you will receive voice calls from all users operating at the same frequency.
You may request your dealer to program corresponding parameters on certain channels. For detailed
operation method, please consult your dealer.
Time-out Timer (TOT)
The purpose of TOT is to prevent any user from occupying a channel for an extended period. When the
preset time expires, the radio will automatically terminate transmission and keep beeping. To stop
beeping, please release the PTT key. You must wait for a certain time period (preset by your dealer) to
initiate another transmission.
If the pre-alert function is set by your dealer, your radio will alert you to the TOT expiration in advance.
Adjust Power Level
With this feature, you may switch power levels quickly. Generally, we recommend you to adopt low
power for battery saving. However, if you cannot communicate with other radios located at a distant
place with low power, please select high power.
Operation:
Press the programmed Adjust Power Level key to switch between high power and low power (from
high power to low power: a low-pitched tone sounds; from low power to high power: a high-pitched
tone sounds).
Monitor
This feature allows you to lower the conditions for incoming signal match.
Operation:
Press the programmed Monitor key to activate this function (an alert tone sounds); press it
again to deactivate the function (the alert tone sounds twice). Or
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