JETDS system equipment abbreviation

some of these were brought forward from the SCR system (SCR System Abbreviations), some were changed, causing confusion.

• AB - Support for Antenna ("antenna base")
• AM - Amplifier
• AS - Antenna, Simple and Complex
• (AT - Antenna, Simple; this unit designator has been removed from the system; now covered by AS)
• BA - Battery, Primary Type (non-rechargeable)
• BB - Battery, Secondary Type (rechargeable)
• BZ - Alarm Unit ("buzzer")
• C - Control
• CA - Computer Auxiliary Unit (like peripheral devices, etc.)
• (CA - Commutator Assembly; this unit designator has been removed from the system)
• (CB - Capacitor Bank; this unit designator has been removed from the system)
• CC - Cable Assembly, RF
• CD - Controlling Device
• (CG - RF Cable & Transmission Line; this unit designator has been removed from the system; now covered by CC)
• (CK - Crystal Kit; this unit designator has been removed from the system)
• CM - Comparator
• CN - Compensator
• CP - Computer
• (CR - Crystal; this unit designator has been removed from the system)
• CU - Coupler
• CV - Converter (Electronic)
• CW - Radome
• CX - Cable Assembly, non-RF
• CY - Case or Cabinet
• D - Dispenser
• DA - Dummy Load (electrical test loads)
• DI - Data Transmission Device
• DT - Detecting Head
• DU - Display Unit/Monitor (peripheral device for computers etc.) (see note 2)
• (DY - Dynamotor; this unit designator has been removed from the system)
• (E - Hoist; this unit designator has been removed from the system)
• F - Filter Unit
• (FN - Furniture; this unit designator has been removed from the system)
• FO - Fiber Optics Device
• FR - Frequency Measuring Device
• G - Power Generator (see also PU)
• GO - Goniometer
• (GP - Ground Rod; this unit designator has been removed from the system)
• H - Head, Hand or Chest Set
• (HC - Crystal Holder; this unit designator has been removed from the system)
• HD - Environmental Apparatus
• ID - Indicator Unit (non-cathode ray tube)
• (IL - Insulator; this unit designator has been removed from the system)
• IM - Intensity Measuring Device
• IP - Indicator Unit (cathode ray tube)
• J - Interface Unit ("Junction")
• KG - Key Generator
• KY - Keying Device
• LA - Laser
• (LC - Line Construction Tool; this unit designator has been removed from the system)
• (LM - Lamp; this unit designator has been removed from the system)
• LS - Loudspeaker
• M - Microphone (Was Misc. under SCR system)
• (MA - Magazine; this unit designator has been removed from the system)
• MD - Modulator, Demodulator or Discriminator
• ME - Meter, was maint. equip.
• (MF - Magnetics or Magnetic Field Generators; this unit designator has been removed from the system)
• MK - Miscellaneous Kit
• ML - Meteorological Device
• MO - Multipurpose Unit
• MT - Mounting
• MU - Memory Unit
• MW - Microwave Device
• MX - Miscellaneous
• O - Oscillator
• OC- Oceanographic Device
• OS - Oscilloscope, Test (see note 1)
• (PD - Prime Driver; this unit designator has been removed from the system)
• (PF - Pole Fitting; this unit designator has been removed from the system)
• (PG - Pigeon Article; this unit designator has been removed from the system)
• (PH - Photographic Article; this unit designator has been removed from the system)
• PL - Plug-In Unit
• PP - Power Supply (non-rotating types)
• PT - Mapping or Plotting Unit
• PU - Power Equipment (rotating)
• R - Receiver
• RB - Robotics
• (RC - Reel; was radio components. this unit designator has been removed from the system)
• RD - Recorder/Reproducer
• RE - Relay Assembly Unit
• (RF - Radio Frequency Unit; this unit designator has been removed from the system)
• (RG - Bulk RF Cable; this unit designator has been removed from the system)
• RL - Reeling Machine
• RO - Recorder
• RP - Reproducer, was rope
• RR - Reflector
• RT - Receiver/Transmitter
• S - Shelter
• SA - Switching Unit
• SB - Switchboard
• SG - Signal Generator
• SM - Simulator
• SN - Synchronizer
• SS - Special Purpose Device
• (ST - Strap; this unit designator has been removed from the system)
• SU - Electro-Optical Unit
• SY - Secure Speech Device
• T - Transmitter
• TA - Telephone Apparatus
• TB - Towed Body
• (TC - Towed Cable; this unit designator has been removed from the system)
• TD - Timing Device
• TF - Transformer
• TG - Positioning Device, was telegraph
• TH - Telegraph Apparatus
• (TK - Tool Kit; this unit designator has been removed from the system)
• (TL - Tool; this unit designator has been removed from the system)
• TN - Tuning Unit
• TR - Transducer, was tower
• TS - Test Set
• TT - Teletypewriter or Facsimile Apparatus
• TU - Television
• (TV - Tube Tester; this unit designator has been removed from the system)
• TW - Tape Unit
• (U - Audio and Power Connector; this unit designator has been removed from the system)
• (UG - RF Connector; this unit designator has been removed from the system)
• V - Vehicle, just to confuse things V is now "version"
• (VS - Visual Signalling Equipment; this unit designator has been removed from the system)
• (WD - Cable, 2 Conductors; this unit designator has been removed from the system)
• (WF - Cable, 4 Conductors; this unit designator has been removed from the system)
• (WM - Cable, Multiple Conductors; this unit designator has been removed from the system)
• (WS - Cable, Single Conductor; this unit designator has been removed from the system)
• (WT - Cable, 3 Conductors; this unit designator has been removed from the system)
• ZM - Impedance Measuring Device