Purpose of AN/URC-131 HFRG receive subsystem

• A. Transmits RF signals to other nodes
• B. Stores encryption keys
• C. Receives RF signals, routes them to the appropriate receiver, demodulates the signals, and routes the audio output to the appropriate user
• D. Performs amplification only

Answer: (C)

The receive subsystem’s job is to handle inbound HF signals and get them to the user. Incoming RF is picked up and routed to the appropriate receiver path so signals on different frequencies can be processed correctly. The system then demodulates the signal to recover the audio or data, and finally sends that output to the correct user interface. This flow—receiving, routing to the right receiver, demodulating, and delivering audio to the user—is what the receive side does. It doesn’t transmit RF, store encryption keys, or simply amplify signals, which are outside its role.