Low Voltage Power Supply Unit

RACAL
Low Voltage Power Supply Unit
NSN
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GEC Avionics Ltd
76684/0086/01
Part No. 20-806-001-02
Iss. B
Mass 6.6Kg.
Ser. No. 0022

Manufactured by Racal for GEC Avionics in an unknown system. The top of this PSU has seven indicators from the unit's Built-In Test Equipment (BITE) that show the status of each of the PSU's various outputs. Given the business that Racal developed in Sonar systems this is probably used in the AQS 903 system.