A Assembly
AR Amplifier
AT Attenuator; Isolator
B Blower
BR Bridge Rectifier
BT Battery
C Capacitor
CB Circuit Breaker
CN Capacitor Network
CP Coupler
CR Diode or Silicon Rectifier
D Diode; Thyristor; Varacter
DC Directional Coupler
DP Duplexer
DL Delay Line
DS Digital Display; LED Lamp
E Miscellaneous Electrical Part
F Fuse
FB Ferrite
FD Fiducial
FL Filter
G Generator
HW Hardware
HY Circulator
I or ICT In Circuit Test Point
J Jack Connector
JP Configuration Jumper
K Relay
L Coil; Inductor
LS Loud Speaker/Buzzer
M Motor
MG Motor-Generator
MH Mounting Hole
MK Microphone
MP Mechanical Part
P Plug Type Connector
PS Power Supply
Q Transistor
R Resistor
RN Resistor Network
RT Thermistor
S Switch
T Transformer
TB Terminal Block
TC Thermocouple
TP Test Point
U Tuner
U Integrated Circuit
V Electron Tube
VR Voltage Regulator
W Cable Transmission
X Sub-circuit
Y Crystal or Oscillator
Z Ref Des Suppressed
