CT690 user’s manual
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Functions and operations
Squelch level (SQL) - MENU No.0
This function turns on the Squelch when the signal is strong; the Squelch will
stay off when the signal is weak. Set the same DCS codes of your group and
turn on the squelch.
By setting the level too high, you may not receive the weak signals; while by
setting it too low you may receive noises or undesired signals.
There are 9 levels available: from 0 to 9. 0 = lowest; 9 = highest
Step frequency (STEP) - MENU No.1
This function lets you select the desired frequency step.
The selectable steps are the following:
2.5/5/6.25/10.0/12.5/25 KHz
Note: in channel mode, this function cannot be enabled.
Output power (TXP) - MENU No.2
In this
MENU
you can select the high/low output power.
Low power = 1W; High power = VHF 6W / UHF 5W
Note: select the output power can improve the quality of the call, while the low
output power can reduce the radiation and the battery capacity loss. In chan-
nel mode press the fast key “#” to switch between the high or low output power
(MENU No.55).
Battery save (SAVE) - MENU No.3
The power save feature enables a reduction in the consumption of the battery
when the radio is in standby.
You have 5 selections available: OFF / 1:1 / 1:2 / 1:3 / 1:4.
For example: 1:1 = 1s’ working and 1s’ battery saving. 1:2 = 1s’ working and 2s’
battery saving.
VOX Function (VOX) - MENU No.4
This function allows hands-free conversations: just speak in the direction of the
microphone and the communication will be automatically activated.
You can choose amongst 11 levels: OFF-10. 1 is the highest level, 10 is the
lowest one.
Summary of Contents for CT690
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