High Frequency Communications

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High radio frequencies (HF) between 3 and 30 mHz used for air-to-ground voice communication in overseas operations. (FAA4)

HIGH FREQUENCY COMMUNICATIONS

High radio frequencies (HF) between 3 and 30 MHz used for air-to-ground voice communication in overseas operations.

Source: U.S. Department of Transportation, Federal Aviation Administration (FAA).

Define High Frequency Communications