How can you verify the correct navaid frequency using Morse code?

• A. Push the volume button on the PFD controller when a VHF Nav radio window is in focus.
• B. Listen to the audio Morse code on the cockpit speaker.
• C. Read a printed ID on the cockpit placard.
• D. Wait for the autopilot to confirm the frequency.

Answer: (A)

Verifying the navaid frequency by listening to its Morse code ident provides direct confirmation that you’re tuned to the intended station. VHF navaids transmit a Morse identifier that matches the facility’s ID. On the PC-12 NGX, you focus the VHF Nav radio window and push the volume knob to hear the ident through the cockpit speaker. If the Morse you hear matches the expected ID, you know the frequency you’re on is the correct navaid.

This works because it ties the actual received signal to the station’s published identity, reducing the chance of cross-tuning or mis-tuning. Simply listening without enabling the ident, or relying on static placards or autopilot feedback, doesn’t provide that real-time verification.