In aviation communications, RT stands for what?

• A. Radio Telemetry
• B. Run Time
• C. Receiver-Terminal
• D. Receiver-Transmitter

Answer: (D)

In aviation communications, a device that can both receive and transmit on the radio is called a receiver-transmitter, often abbreviated RT, essentially a two-way radio or transceiver. This is the best choice because it specifically identifies a unit that handles both directions of communication, which is what pilots rely on for talking to air traffic control and other aircraft.

The other terms describe different things: radio telemetry is about sending data from sensors to a ground station, run time is a general computing term, and receiver-terminal isn’t a standard designation for aviation radios. In practice, the RT lets you listen on a frequency and, when you press and release the switch, transmit back, enabling real two-way communications.