Other · Menu 55
Built-in stopwatch utility.
MENU on the radio to open the menu.55: STOP WATCH.MENU again to enter the setting.MENU to save, or EXIT to cancel.Radio Interrupt— Priority interrupt — whether the built-in FM broadcast radio can be interrupted by incoming 2-way transmissionsReset— Factory reset — wipe VFO settings only, or all settings including channelsVERSION— Firmware version — read-only display of current firmware identifierSee the full RT-900 menu reference for all menu items.