The local oscillator used by the MSSR receiver is sourced from which subsystem?

• A. Transmitter Interface
• B. Local Oscillator Module
• C. Plot Processor
• D. Receiver Interface

Answer: (D)

The local oscillator signal for the MSSR receiver is provided through the Receiver Interface. In this setup, the Receiver Interface handles the distribution and control of the LO to the MSSR receiver, ensuring the downconversion mixer inside the receiver gets a stable, synchronized LO that is under the system’s timing and control framework. This centralized routing via the Receiver Interface keeps the MSSR receiver’s LO in step with the rest of the receiver chain and the overall radar timing.

The Transmitter Interface can’t supply the MSSR receiver’s LO, since it serves the transmitter path. The Plot Processor handles data processing and display, not RF synthesis. Although the Local Oscillator Module sounds like a natural LO source, the architecture here routes the MSSR receiver’s LO through the Receiver Interface for coordinated control and monitoring.