Which two tabs must have FREQUENCY DIVERSITY authorized to alternate radar frequencies between each Major Duty Cycle?

• A. 54 and 75
• B. 53 and 76
• C. 54 and 76
• D. 54 and 77

Answer: (C)

Frequency diversity relies on using two distinct transmitter frequencies, switching between them from one Major Duty Cycle to the next. For that to work, both tabs that control the transmitter must be authorized for frequency diversity. If either tab isn’t authorized, you won’t have two separate frequencies to hop between, so you’d either stay on one frequency or fail to implement the planned alternating pattern.

So the best answer is the pair where both tabs are enabled for frequency diversity, ensuring the system can alternate frequencies across each Major Duty Cycle. The other pairs include at least one tab without diversity authorization, which prevents the necessary two-frequency hopping.