Navy Type Number Classes for electronic devices

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Navy Manufacturer Codes (thanks to F.W. Chesson)

For example, CLT-26012 is manufacturer's code CLT (Lundquist Tool), class 26 (Key-Telegraph), type 012
       Generic type number is NT-26012

• 10 MISCELLANEOUS: To be used when a definite class is not available;
• 14 SPECIAL RF DEVICES (NOT COVERED BY ANY OTHER CLASSIFICATION); Electronic switching, etc.
• 18 PRIME MOVERS AND ACCESSORIES: All types except electrical
• 19 BATTERIES: All types; parts and accessories
• 20 RECTIFIER POWER UNITS-VOLTAGE REGULATORS-COPPER OXIDE RECTIFIERS: All types;
  A20 CRYSTAL DETECTORS
• 21 MOTORS-GENERATORS-DYNAMOTORS- MOTOR GENERATORS-ROTARY CONVERTERS, etc.-MOTOR CONTROLLERS
• 22 INSTRUMENTS-ELECTRICAL INDICATING AND RECORDING
• 23 CONTROL PANELS AND CONTROL UNITS (Except Motor Controllers)
• 24 SWITCHES: Manually operated
• 25 SHIELDS AND SHIELDING MATERIAL
• 26 KEYS-TELEGRAPH: Manually operated
• 28 PROTECTIVE DEVICES: Static types
• 29 ELECTROMAGNETIC CONTACT DEVICES: All types
• 30 TRANSFORMERS AND REACTORS: Power and audio
• 35 OSCILLATORS-COMPETE UNITS (Audio or RF)
• 36 RANGING EQUIPMENT-RADIO (Localizer, Rotating Beacons, etc.)
• 38 VACUUM TUBES-PHOTO ELECTRIC CELLS: All types
• 40 PIEZO-ELECTRICAL CRYSTALS AND HOLDERS-THERMOMETERS AND THERMOSTATS
• 41 COMPENSATORS-UNDERWATER SOUND
• 43 TRANSMITTER-RECEIVER UNITS (Combined): Equipment in which the transmitter and receiver are not separable as units
• 46 RECEIVER UNITS AND CONVERTERS (RF to IF, etc.)-RADIO AND SOUND
• 47 RF TRANSFORMERS-INDUCTORS-CHOKES
• 48 CAPACITORS: All types
• 49 HEAD TELEPHONES-TELEPHONE CORDS-PATCH CORDS-LOUDSPEAKERS-PLUGS- JACKS-SOCKETS-RECEPTACLES: All types
• 50 AMPLIFIER, MODULATOR AND COUPLER UNITS-ELECTRONIC CONVERTERS-MIXING PANELS: All types (Complete Diplex and Duplex units); see 14 for electronic switching
• 51 MICROPHONES-HYDROPHONES- UNDERWATER SOUND ELECTRICAL PICKUP DEVICES-COMBINATION HANDSETS: All types
• 52 RADIO TRANSMITTER UNITS: Includes RF drivers for underwater sound equipment, etc.
• 53 FILTER UNITS: All electrical types
• 54 SOUND RECEIVING DEVICES-ACOUSTICAL
• 55 INDICATORS AND RECORDERS: Radio, Radar, and Underwater Sound (Indicating instruments under class 22)
• 56 WAVE PROPAGATION
• 59 TELEVISION-PHOTO-RADIO
• 60 TEST EQUIPMENT (Integral instruments under Class 22);
  A60 TRAINING EQUIPMENT (Operator trainers and instruction devices)
• 61 INSULATORS AND INSULATING MATERIAL: Phenolic and ceramic
• 62 WIRES AND CONDUCTORS-JUNCTION BOXES;
  A62 RF TRANSMISSION LINES AND RF CABLES, etc.
• 63 RESISTORS: All types
• 64 STATIC RECORDERS AND ELIMINATORS
• 65 REMOTE CONTROL SYSTEMS BY WIRE: Repeater systems, etc.
• 66 ANTENNAS-ANTENNA ASSEMBLIES (Dummy and phantom antennas)
• 67 AUTOMATIC SYSTEMS, FACSIMILE, TELEAUTOMATIC: Automatic keyers and recorders
• 68 SECRECY SYSTEMS: Sending and receiving (Speech scrambling)
• 69 DIRECTION FINDING EQUIPMENT: Radio
• 70 DISTANCE FINDING; A70 RADIO ALTIMETERS
• 72 PORTABLE EQUIPMENT-FIELD SETS
• 73 COMBINED GAS ENGINE GENERATOR SETS
• 74 PRECISION CALIBRATION AND MEASURING EQUIPMENT
• 75 STANDARDS: Includes standardization notices, etc.
• 78 HF UNDERWATER SOUND PROJECTOR (above 10 kHz) and supporting parts
• 79 LF UNDERWATER SOUND PROJECTOR (10 kHz or below)
• 83 FREQUENCY CONTROL SYSTEMS
• 84 CONTROL BY RADIO
• 85 INTERFERENCE REDUCTION
• 87 EXPERIMENTAL SUPERFREQUENCY EQUIPMENT
• 88 INSTRUMENT LANDING EQUIPMENTS
• 89 RADIO RECOGNITION AND IDENTIFICATION DEVICES
• 90 VISUAL SIGNALING APPARATUS (This classification for type number assignments only)