In telecommunications, a network interface device is a device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring. Outdoor telephone NIDs also provide the subscriber with access to the station wiring and serve as a convenient test point for verification of loop integrity and of the subscriber's inside wiring.
Elmer Ambrose Sperry Sr. was an American inventor and entrepreneur, most famous for construction, 2 years after Herman Anschütz-Kaempfe, of the gyrocompass and as founder of the Sperry Gyroscope Company. He was known as the "father of modern navigation technology."
1 Main Circuit (1MC) is the term for the shipboard public address circuits on United States Navy and United States Coast Guard vessels. This provides a means of transmitting general information and orders to all internal ship spaces and topside areas, and is loud enough that all embarked personnel are able to (normally) hear it. It is used to put out general information to the ship’s crew on a regular basis each day. The system consists of an amplifier-oscillator group which is located in the IC/gyro room, a microphone control station, portable microphones at each control station and loudspeakers located throughout the ship. Control stations for the 1MC announcing system are located at the pilot house, OOD stations on the quarterdecks, aft steering and Damage Control Central area.
The Enlisted Aviation Warfare Specialist (EAWS) insignia is a military badge of the United States Navy which was created in March 1980. The insignia recognizes those members of the Navy's enlisted force who have acquired the specific professional skills, knowledge, and military experience that result in qualification for service in the aviation activities of the Navy. This includes most personnel who are trained flight deck personnel onboard aircraft carriers, or maintenance personnel at an Aircraft Intermediate Maintenance Detachment or Department or aircraft squadron.
Seafaring is a tradition that encompasses a variety of professions and ranks. Each of these roles carries unique responsibilities that are integral to the successful operation of a seafaring vessel. A ship's crew can generally be divided into four main categories: the deck department, the engineering department, the steward's department, and other. The reasoning behind this is that a ship's bridge, filled with sophisticated navigational equipment, requires skills differing from those used on deck operations – such as berthing, cargo and/or military devices – which in turn requires skills different from those used in a ship's engine room and propulsion, and so on.
Cryptologic Technician (CT) is a United States Navy enlisted rating or job specialty. The CT community performs a wide range of tasks in support of the national intelligence-gathering effort, with an emphasis on cryptology and signal intelligence related products.
Machinist's mate is a rating in the United States Navy's engineering community.
Radioman (RM) was a rating for United States Navy and United States Coast Guard enlisted personnel, specializing in communications technology.
Aviation electronics technician (AT) is a US Navy enlisted rating or job specialty. At the paygrade of E-9 ATs merge with the aviation electrician's mate (AE) rating to become avionics technicians (AV). There has been talk of completely merging the two ratings, but as yet no definite plans have been announced. Aviation electronics technicians wear the specialty mark of a winged Helium atom.
Aviation boatswain's mate is a United States Navy occupational rating.
Aviation Electrician's Mate is a United States Navy occupational rating.
Operations Specialist is a United States Navy and United States Coast Guard occupational rating. It is a sea duty-intensive rating in the Navy while the majority of Coast Guard OS's are at ashore Command Centers.
Electrician's Mate is a United States Navy and United States Coast Guard occupational rating. The Electrician's Mate's NOS is B210.
Hull maintenance technician is a United States Navy occupational rating.
Radarman was a rating in the U.S. Navy and the U.S. Coast Guard during, and after, World War II. The following ratings existed during the war for male or female enlisted personnel training, or with training, in the operation and maintenance of radar sets:
The United States Navy occupational rating of boatswain's mate is a designation given by the Bureau of Naval Personnel (BUPERS) to enlisted members who were rated or "striking" for the rating as a deck seaman. The colloquial form of address for a boatswain's mate is "Boats".
Information systems technician (IT) is a rating for United States Navy and United States Coast Guard enlisted personnel, specializing in communications technology. Information systems technician submarines (ITS) is a rating for U.S. Navy submariners. The Information systems technician (IT) rating corresponds to the new Navy Occupational Specialty (NOS) code B460 while the information systems technician submarines (ITS) rating corresponds to Navy Occupational Specialty (NOS) code C260.
The United States Navy job rating of electronics technician (ET) is a designation given by the Bureau of Naval Personnel (BUPERS) to enlisted members who satisfactorily complete initial Electronics Technician "A" school training.
Electronics Technician (ET) is a common enlisted occupation in the armed forces of many different countries. Common duties for ETs include repair, calibration, and basic maintenance of most electronic equipment.
