How many ARC-210 radios are part of the JPALS system?

The JPALS (Joint Precision Approach and Landing System) utilizes four ARC-210 radios as part of its communication and data link framework. These radios are integral to ensuring secure and robust communication between various components of the system, which is critical for precision landing and approach. The functionality provided by these radios contributes to the reliability and effectiveness of JPALS in a networked environment, supporting multiple users and enhancing situational awareness.

Having four radios allows for redundancy and ensures that the system can maintain connectivity even if one radio fails, which is vital for operational effectiveness in various scenarios, including those involving closely coordinated aircraft operations. Therefore, the presence of four ARC-210 radios is in line with the system's design requirements for enhancing operational safety and efficiency during landings.