Topcom Twintalker 9000
13.7 CTCSS (Continuous Tone Coded Squelch System)
The 2 digit CTCSS code corresponds to a specific tone frequency the radio emits. Two users, with the same channel and CTCSS set can hear one another.They will not be able to hear anyone else on the channel unless the other radios have the same exact CTCSS code enabled.
The PMR has 38 CTCSS codes available.
• | Press |
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| twice, the CTCSS code will flash |
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• | Press | or | to select another code. |
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• Press PTT | to confirm your selection and return to the NORMAL mode. | ||||||
• | To confirm and shift to the next option, press |
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NOTE: Any PMR set on the same channel can receive and listen to the conversation, also when the other use a CTCSS code.
13.8 Monitor
You can use the MONITOR feature to check for weaker signals in the current channel.
•Press 
and 
simultaneous to activate channel monitoring. Hold these buttons for 3 seconds for contiuous monitoring.
•Press PTT to stop monitoring
13.9 VOX Selection
The PMR is capable of voice activated (VOX) transmission. In VOX mode, the radio will transmit a signal when it is activated by your voice or other sound around you. VOX operation is not recommended If you plan to use your radio in a noisy or windy environment.
• | Press |
| 3 times. |
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• | Press |
| to turn the VOX feature ON and press | again to select the |
| VOX sensitivity level which is indicated in the right corner of the display. | |||
| Press |
| until OF appears on the display, to turn VOX OFF. | |
• | In the VOX mode, the VOX icon will be displayed. |
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• To confirm your selection and return to the NORMAL mode, press PTT .
10 | Topcom Twintalker 9000 |