Other · Menu 56
Firmware version — read-only display of current firmware identifier.
MENU on the radio to open the menu.56: VERSION.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 channelsSTOP WATCH— Built-in stopwatch utilitySee the full RT-900 menu reference for all menu items.