If a frequency fails to tune in the COMSET a ______ will be present.

• A. Red X
• B. White X
• C. Gray X
• D. Black X

Answer: (B)

When tuning to a frequency using COMSET, you rely on a quick visual cue to know whether the system has locked onto the setting. If the frequency fails to tune in, a white X appears on the display. This white marker specifically flags that the COMSET tuning did not complete successfully, so you know to check the input, adjust the frequency, or verify the setup to try again.

The other colors would indicate different conditions (for example, a red X might imply a fault needing urgent attention, while gray or black marks would correspond to other states), but they don’t signify a failed COMSET tune. So the white X is the indicator that the tuning attempt did not succeed.