Which indicator on the EUFD corresponds to Frequency Hopping?

• A. Frame Rate
• B. Frequency Hopping
• C. Fixed Frequency
• D. Fast Access

Answer: (B)

Frequency hopping is a method where the transmitter rapidly changes the carrier frequency according to a predefined sequence, rather than staying on one fixed channel. The indicator on the EUFD that shows Frequency Hopping being active alerts the operator that the link is in hopping mode, which has vital implications for tuning, synchronization, and security. When hopping, both ends must stay synchronized to follow the same hop pattern; otherwise the receiver will lose the signal. This indicator is the best choice because it directly confirms the operating mode of the link. The other indicators don’t describe the frequency change method: frame rate relates to how often data frames are sent or refreshed, fixed frequency would indicate a single, stable channel rather than hopping, and fast access refers to how quickly resources can be accessed rather than to the hopping behavior.