On SINCGARS startup, to which position should the channel switch be set?

On SINCGARS startup, to which position should the channel switch be set?

• A. MAN
• B. AUTO
• C. OFF
• D. EXT

Answer: (A)

Starting up a SINCGARS radio, you want direct control over the channel you plan to use. Set the channel switch to manual so you can select and confirm the exact frequency during power-up, testing, and verification. Manual mode prevents automatic channel hopping that could occur if the radio initializes and selects a channel on its own. The other settings aren’t appropriate for startup: turning it off powers the radio down, and external control is only for specific configurations. Automatic channel selection would take over during startup, making it harder to establish and verify the intended channel. So manual is the correct position.

Starting up a SINCGARS radio, you want direct control over the channel you plan to use. Set the channel switch to manual so you can select and confirm the exact frequency during power-up, testing, and verification. Manual mode prevents automatic channel hopping that could occur if the radio initializes and selects a channel on its own. The other settings aren’t appropriate for startup: turning it off powers the radio down, and external control is only for specific configurations. Automatic channel selection would take over during startup, making it harder to establish and verify the intended channel. So manual is the correct position.