MS21412A (NOTICE), MILITARY STANDARD: TRANSFORMER, AUDIO FREQUENCY, SUB-MINIATURE, TYPE TF5R21ZZ (14 AUG 1979) [SUPERSEDED BY MIL-T-27/172 NOW MIL-PRF-27/172]
MS21412A (NOTICE), MILITARY STANDARD: TRANSFORMER, AUDIO FREQUENCY, SUB-MINIATURE, TYPE TF5R21ZZ (14 AUG 1979) [SUPERSEDED BY MIL-T-27/172 NOW MIL-PRF-27/172].