The SPC 1940 incorporates four functional Signal Processing Controller (SPC) entities, SPC #1 to SPC #4, providing concurrent quad-network operation for Link 22. Each embedded SPC operates independent from the other one.

HF-EPM mode of operation is ready for implementation but pending due to regulation by the U.S. on TRANSEC availability. A proprietary TRANSEC solution – enabled by relaxed standardization – can be provided on demand but at the expense of violated interoperability.