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Midland CT990 instruction guide | 17
Busy channel lockout (BUSY LOCK) - Menu Utilities 29
When this function is enabled, it prevents other radios’ interferences.
If the selected channel is busy, when you press the PTT the radio cannot
transmit.
In standby mode press Menu Utilities + 29; the display will show “BUSY
LOCK”.
Press Menu to enter the function.
Push / or rotate the encoder to select ON or OFF.
Confirm the setting by pushing Menu and press Back to return to standby
mode.
Keypad lock (LOCK MODE) - Menu Utilities 30
The keypad lock can be activated in two modes: Automatic and Manual.
In Standby mode press Menu Utilities + 30; “KEYPAD LOCK” will appear on
the display.
Press Menu to enter the function. Push the / keys or rotate the encoder
to select ON/OFF; press Menu again to confirm your selection.
Return in standby condition by pushing Back.
The keypad lock can be manually activated/deactivated through the keypad:
keep pressed * .
Side tone (Side Tone) - Menu Utilities 31
The side tone (end tone) allows to eliminate the bothersome tone heard at the
end of transmission.
Side tone can be enabled/disabled.
In Standby mode press Menu Utilities + 31; the display will show “SIDE TONE”.
Press Menu to enter the function.
Push the / keys or rotate the encoder to select ON/OFF. Press Menu
again to confirm your selection.
Press Back to return in standby condition.
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