MS21407A (NOTICE), MILITARY STANDARD: TRANSFORMER, AUDIO FREQUENCY, SUB-MINIATURE TYPE TF5R21ZZ (14 AUG 1979) [SUPERSEDED MIL-T-27/172 NOW MIL-PRF-27/172]
MS21407A (NOTICE), MILITARY STANDARD: TRANSFORMER, AUDIO FREQUENCY, SUB-MINIATURE TYPE TF5R21ZZ (14 AUG 1979) [SUPERSEDED MIL-T-27/172 NOW MIL-PRF-27/172].