This read-only object reports the terminal (antenna-facing) Rx frequency, computed as LNB LO +/- Rx_Frequency depending on the configured LO mix, in 100 Hz units, returning 0 if the LNB LO frequency is set to zero. This is a convenience readout that saves an admin from doing the LO-mix arithmetic manually -- it reflects the actual downlink frequency the antenna is tuned to, combining the Rx frequency, LNB LO frequency, and LO mix settings, so verifying it against the transponder's published downlink frequency is a quick sanity check that all three underlying settings are configured correctly together. If the transponder's published downlink frequency differs from what this object reports, that mismatch reveals an error in one of the three contributing settings even before checking whether the demodulator has achieved lock.