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Multiple Choice

What are the H40 frequencies?

Frequencies shown next to a route on a chart tell you how to contact air traffic or the controlling facility for that route. For the helicopter route H40, the published pair is 134.1 for VHF voice and 334.1 for UHF voice. This lets both civilian pilots (via VHF) and military pilots (via UHF) establish two-way communication as they operate along the route. The other frequency pairs aren’t the published ones for this route, so they wouldn’t provide the correct contact channel for H40.

Frequencies shown next to a route on a chart tell you how to contact air traffic or the controlling facility for that route. For the helicopter route H40, the published pair is 134.1 for VHF voice and 334.1 for UHF voice. This lets both civilian pilots (via VHF) and military pilots (via UHF) establish two-way communication as they operate along the route. The other frequency pairs aren’t the published ones for this route, so they wouldn’t provide the correct contact channel for H40.