Which term describes transmitting on one frequency and receiving on a separate frequency?

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Multiple Choice

Which term describes transmitting on one frequency and receiving on a separate frequency?

Explanation:
The main idea here is how a radio handles two-way communication. Using two distinct frequencies—one for transmitting and one for receiving—is duplex operation. This arrangement lets you talk on one channel and listen on another, and when both directions happen at the same time, it’s described as full duplex. If you could only use one frequency for both directions or alternate between transmit and receive on the same channel, that would be simplex or half duplex, not duplex. Quadplex would involve four frequencies and isn’t the typical setup for standard two-way aviation radios.

The main idea here is how a radio handles two-way communication. Using two distinct frequencies—one for transmitting and one for receiving—is duplex operation. This arrangement lets you talk on one channel and listen on another, and when both directions happen at the same time, it’s described as full duplex. If you could only use one frequency for both directions or alternate between transmit and receive on the same channel, that would be simplex or half duplex, not duplex. Quadplex would involve four frequencies and isn’t the typical setup for standard two-way aviation radios.

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