How can the keypad on newer Commander radios be locked?

The keypad on newer Commander radios can be locked by pressing and holding the FCN key located in the top-right corner. This functionality is designed for quick and efficient operation, allowing users to prevent accidental input while handling the radio in various environments, particularly during wildland firefighting operations where focus and precision are critical.

Locking the keypad by this method is straightforward and does not require extra tools or complicated processes, making it user-friendly for emergency situations. This feature helps ensure that critical communication capabilities are maintained without unintended changes to settings or channels due to accidental presses.

Other methods, like using a special locking tool or entering a passcode, may not be supported by all radio models, which can limit accessibility and speed during time-sensitive scenarios. Hence, the specific use of the FCN key provides a balance between security and usability in the high-pressure context of wildland firefighting.