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The rating insignia adopted was that of the established Radioman (abbreviated as RM) rating, and remained until October 1945, when the rating name was changed to Electronic Technician's Mate (abbreviated as ETM). In 1948, the Navy changed the name of the rating to Electronics Technician, and a new rating insignia was created. [1]
I ^ : Cryptologic Technician now includes former rating of electronic warfare technician (EW). [28] II ^ : Information Systems Technician now includes former rating of cryptologic technician – communications (CTO). [28] III ^ : Quartermaster QM now exists as electronics technician (navigation) ETV on submarines. [28]
This rating was re-designated aviation electronics technician's mate on 31 October 1945. Effective 2 April 1948 the name of the rating became aviation electronics technician (AET); the abbreviation was changed to (AT) on 9 June of the same year. A separate rating, aviation electronicsman was absorbed in 1955.
In 1996, the Submarine force merged Radioman with Electronics Technicians/ Electronic Warfare Specialist. The Coast Guard rating was renamed Telecommunications Specialist (TC) in 1995, which split in July 2003 to make up the Information System Technician (IT) and Operations Specialist (OS) ratings. [2]
When the radarman rating was split up into OS, electronics technician (ET), and electronic warfare technician (EW) ratings, the original RD rating badge continued to be used by the operations specialist. It symbolizes the radar scope (circle portion of symbol) oscilloscope radar (O-scope) used to determine a target's range from the radar ...
Eddy Test was the common name for a test given throughout World War II and for several years thereafter, to identifying men with the capability and aptitude for being trained in the enlisted ranks as electronics maintenance technicians in the U.S. Navy and U.S. Marine Corps.
Cryptologic Technician Communications (CTO) cross-rated to CTN and the legacy CTOs merged with information systems technician (IT). CTM were scheduled to be disestablished in 2008, with certain skill sets converting to electronics technician (ET) and information systems technician (IT) billets, but this has been set on hold for further planning.
The Coast Guard radioman (RM) rating was renamed telecommunications specialist (TC) in 1995, which split in 2003 to make up the information system technician (IT) and operations specialist (OS) ratings. The Coast Guard telephone technician (TT) rating was also merged into the IT rating in 2003; the TT rating device of a telephone handset over ...