VHF radio systems can communicate in which modes?

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Multiple Choice

VHF radio systems can communicate in which modes?

Explanation:
VHF radios are designed to handle both unencrypted and encrypted communications. They can transmit plain voice, which anyone with the same channel can hear, and they can also operate in secure voice, where the audio is encrypted to protect confidentiality. Secure mode requires the proper cryptographic equipment and loaded keys, plus authorization. When those conditions are in place, you can switch to secure voice; if not, you rely on plain voice. So VHF systems can communicate in both plain voice and secure voice.

VHF radios are designed to handle both unencrypted and encrypted communications. They can transmit plain voice, which anyone with the same channel can hear, and they can also operate in secure voice, where the audio is encrypted to protect confidentiality. Secure mode requires the proper cryptographic equipment and loaded keys, plus authorization. When those conditions are in place, you can switch to secure voice; if not, you rely on plain voice. So VHF systems can communicate in both plain voice and secure voice.

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