What is the function of block 2 in a transceiver with designated transmitter and receiver portions?

The function of block 2 in a transceiver that features designated transmitter and receiver portions is to serve as a transmit-receive switch. This switch is essential because it allows the transceiver to alternate between transmitting and receiving signals without needing to physically disconnect and reconnect the antenna or other components.

In practical terms, when the transceiver is in transmit mode, the switch connects the transmitter to the antenna, allowing the operator to send signals out. Conversely, when the transceiver switches to receive mode, the switch disconnects the transmitter from the antenna and connects the receiver to capture incoming signals. This functionality is crucial for smooth operation and efficient use of the transceiver, as it eliminates interference that could occur if both the transmitter and receiver were active simultaneously.

Understanding this switch's role in a transceiver's design clarifies its importance in facilitating communication, as it optimizes the equipment's ability to handle different operational states effectively.