In radio systems, what does 'T/R switch' stand for?

In radio systems, the term 'T/R switch' stands for 'Transmit/Receive switch.' This component is essential in communication systems as it determines the function of the radio equipment at any given time. When transmitting, the T/R switch directs the signal from the transmitter to the antenna, effectively sending out the radio waves. Conversely, when receiving, it allows incoming signals from the antenna to reach the receiver.

The functionality of the T/R switch ensures that the radio can either send or receive signals without interference, which is crucial for effective communication. Understanding this operation is fundamental for those working with radio systems, as it highlights the switch's role in achieving bidirectional communication. The other choices do not accurately define the purpose of the T/R switch, as they reflect different functions unrelated to the transmit and receive capabilities central to radio communication.