The E-6A system is comprised of:

• 1 CCU
• 9 CSUs
• 3 ACUs
• 1 CS/EAP
• 8 MSUs
• 1 MCU

Some features of E-6A are:

• 17 operator interfaces
• Secure RX/TX indication
• 4 8 T/R radios, 3 assignable Cryptos, 3 Conference nets and 7 NAVAIDS, 3 dual-track recorders, receive only radios
• 4 Dual Lo-level HDST support
• High MTBF
• 390 mWatt headset power for single H-157/AIC HDST
• Backup operation : 7 pre-assigned radios to 6 stations, PA to 2 flight deck stations, and CALL to all stations
• Tempest Compliant