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A portable, self-contained test set designed to provide a rapid, reliable means of checking loop-orienting circuits of Radio Compass Units BC-433-G and R-5/ARN-7 and for checking the loop motor, autosyn, compensator, and indicators of Radio Compasses SCR-269G and AN~ARN-7. It tests components by means of substitution of various parts and by taking voltage and current measurements of the components under test in actual operation.



  • TO 16401100-3 (Maintenance Instructions)
  • TO 16-55443 (Spare Parts List)
  • USAF Spec 71-1142