Which statement about the TACAN ID tone is true?

Which statement about the TACAN ID tone is true?

• A. The ID tone is an AM voice message
• B. The ID tone is a CW Morse code signal used for station identification
• C. The ID tone is a digital packet
• D. The ID tone is a continuous audio beep with no Morse code

Answer: (B)

The key idea is how TACAN identifies itself. The ID tone is a CW Morse code signal used for station identification. TACAN transmits a continuous tone that is Morse-keyed to spell out the station’s identifier, so pilots can recognize which TACAN/DME station they’re tuned to even if the signal is weak or noisy. It’s not voice, not a digital data packet, and not just a plain beep with no meaning. The Morse code ident is the reliable, standard way nav aids announce themselves.

The key idea is how TACAN identifies itself. The ID tone is a CW Morse code signal used for station identification. TACAN transmits a continuous tone that is Morse-keyed to spell out the station’s identifier, so pilots can recognize which TACAN/DME station they’re tuned to even if the signal is weak or noisy. It’s not voice, not a digital data packet, and not just a plain beep with no meaning. The Morse code ident is the reliable, standard way nav aids announce themselves.