When the VHF/UHF backup control panel is powered on, can the selected communication radio be tuned at the CNC?

When the VHF/UHF backup control panel is powered on, the communication radio that is selected cannot be tuned at the Centralized Control (CNC). This is because the backup control panel operates independently of the CNC. When using the backup panel, the tuning capabilities are limited to direct inputs from that panel, and any selection or adjustment made at the CNC will not affect the selected communication radio via the backup control panel. This design ensures that if the primary systems at the CNC are compromised, the backup panel can still maintain some level of communication without interference from the CNC operation, thereby enhancing operational safety and redundancy.