Which symbol will appear if a frequency fails to tune in the COMSET?

• A. Red X
• B. No symbol appears
• C. Green X
• D. White X

Answer: (D)

In the COMSET display, the visual status cues are designed to be read at a glance. When the radio cannot lock onto the requested frequency and tuning fails, the interface uses a white X to signal that the tuning attempt did not succeed. This specific symbol stands out clearly, letting you know you need to re-enter or adjust the frequency rather than assuming the channel is ready.

Think of the other signals as indicating different states: a red X would imply a fault or serious error, no symbol would suggest the tune succeeded with no warning, and a green X would typically denote a good or active status. Therefore, the white X is the symbol that communicates a failed tuning in COMSET.