The VHF navigation receiver processes which signals?

• A. VOR and ILS
• B. ILS and TACAN
• C. ILS and GPS
• D. VOR and GPS

Answer: (A)

The key idea is that a VHF navigation receiver is built to pick up signals in the VHF navigation band used for ground-based navaids. VOR stations transmit in this VHF range and provide bearing information, while the ILS localizer also operates in the VHF band to give precise lateral guidance to the runway. TACAN uses UHF frequencies, and GPS uses satellite signals in a completely different band, so they’re not processed by a VHF navigation receiver. The ILS glideslope is actually on a different (UHF) band, so it’s not received by a VHF receiver either. So the signals it processes are VOR and ILS.