Manual of Navy Enlisted Classifications (NEC) NAVPERS 50151 -- Complete manuals 1949-1996 1949 ET, Teleman, Radioman, CT 1959 ET, Radioman 1967 ET, Radioman, CT 1969 ET, Radioman, CT 1929 Radio Materiel School Notebook 1946 Radio Materiel School - Bellevue (Washington DC) - "...