Keypad Lock
To prevent the transceiver’s settings from being inadvertently changed, the keypad can be locked. This will inhibit the function of the UP and DOWN buttons. This is useful when the FR-140 is being used by small children, or when the unit is kept in a pocket. A key icon will be shown on the display whenever the keypad is locked. To lock or unlock the keypad, press the menu button four times or until “LC” is shown on the display. The current setting will be indicated by the two smaller characters to the right. (“on” indicates the keypad is locked, “of” (off) indicates that the keypad is unlocked). Press the UP or DOWN button to change the setting. After 5 seconds, the unit will return to the standby mode.
Call Button
Press this button to transmit a ringing tone to all other transceivers set to the same channel and CTCSS code.
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