TB 43-0123
TABLE III
UNIT INDICATORS (Continued)
UNIT
IND.
FAMILY NAME
EXAMPLE OF USE
MD
Device for varying amplitude, freq. or phase
discriminators
ME
Meters
Muiltimeter, volt-ohm-milliammeters, vacuum tube voltmeters, power
meters
MK
Miscellaneous kits
Maintenance, modification
ML
Meteorological devices
Miscellaneous meorological equip
MT
Mountings
Mountings, racks, frames, stands
MX
Miscellaneous
Equipment not otherwise classified
MU
Memo units
Memory units
O
Oscillators
Master freq., blocking, multivibrators (for test oscillators, see SG)
OS
Oscilloscope, test
Test oscilloscope r general test purposes
PL
Plug-in units
Plug-in unit not otherwise classified
PP
Power supplies
Nonrotating machine type such as vibrator pack, rectifier, hermoelectric
PT
Mapping and plotting units
Electronic types only
PU
Power equipment
Rotating power equipment, motor generator, dynamotors
R
Receivers
Receivers, all types except telephone
RD
Recorder-reproducer
Sound, graphic, tape, wire, film, dixc, facsimile, magnetic, mechanical
RE
Relay assembly units
Electrical, electronic
RL
Reeling machine
Mechanism for dispensing and rewinding antenna or field wire, cable
RO
Recorders
Sound , graphic, tape, wire, film, disc, facsimile, magnetic, mechanical
and card punch
RP
Reproducers
Sound, graphic, tape, wire, film, disc, facsimile, magnetic, mechanical
punched tape and card readers
RR
Target, confusion. Except antenna reflectors
RT
Receiver-Transmitter
Radio and radar transceiver, composite transmitter and receiver
S
Shelters
Protective shelters
SA
Switching units
Manual, impace, motor driven, pressure operated, electronic
SB
Switchboards
Telephone, fire control, power, power distribution
SG
Generator, signal
Test oscillators, noise generator
SM
Simulators
Flight, aircraft, target, signal
SN
Synchronizers
Equipment to coordinate two or more functions
SU
Optical units
Electro-optical units, such as night vision, auto-collimator, scope, sight
viewer, tracker, alignment equipment
T
Transmitter
Transmitters, all types, except telephone
TA
Telephone apparatus
Misc. telephone equipment
TB
Towed body
Hydrodynamic enclosures used to house transducers, hydrophones and
other electronic equipment
TD
Timing devices
Mechanical and elec timing devices, range devices, multplexers,
electronic gates
E-5
