First Modifier	Category	Code	Remarks
Anti-Aircraft Fire Control	Radar	01
Airborne Search and Bombing	Radar	02
Airborne Intercept	Radar	03
Altimeter	Radar	04
Airborne Reconnaissance and Mapping	Radar	05
Air Traffic Control	Radar	06
Beacon Transponder (not IFF)	Radar	07
Battlefield Surveillance	Radar	08
Controlled Approach	Radar	09
Controlled Intercept	Radar	10
Cellular/Mobile	Communications	11
Coastal Surveillance	Radar	12
Decoy/Mimic	Radar	13
Data Transmission	Radar	14
Earth Surveillance	Radar	15
Early Warning	Radar	16
Fire Control	Radar	17
Ground Mapping	Radar	18
Height Finding	Radar	19
Harbor Surveillance	Radar	20
Identification, Friend or Foe (Interrogator)	Radar	21
Instrument Landing System	Radar	22
Ionospheric Sounding	Radar	23
Identification, Friend or Foe (Transponder)	Radar	24
Barrage Jammer	Jammer	25
Click Jammer	Jammer	26
Deceptive Jammer	Jammer	27
Frequency Swept Jammer	Jammer	28
Jammer (general)	Jammer	29
Noise Jammer	Jammer	30
Pulsed Jammer	Jammer	31
Repeater Jammer	Jammer	32
Spot Noise Jammer	Jammer	33
Transponder Jammer	Jammer	34
Missile Acquisition	Radar	35
Missile Control	Jammer	36
Missile Downlink	Air Radar	37
Meteorological	Radar	38
Multi-Function	Jammer	39	Two or more of EW, TA, TT, MG, TI
Missile Guidance	Radar	40
Missile Homing	Radar	41
Missile Tracking	Jammer	42
Navigational/General	Jammer	43
Navigational/Distance Measuring Equipment	Jammer	44
Navigation/Terrain Following	Jammer	45
Navigational/Weather Avoidance	Jammer	46
Omni-Line of Sight (LOS)	Jammer	47
Proximity Use	Air Radar	48
Point-to-Point Line of Sight (LOS)	Communications	49
Instrumentation	Radar	50
Range Only	Radar	51
Sonobuoy	Radar	52
Satellite Downlink	Communications	53
Space	Radar	54
Surface Search	Radar	55
Shell Tracking	Land Radar	56
Satellite Uplink	Communications	57
Target Acquisition	Radar	58
Target Illumination	Radar	59
Tropospheric Scatter	Communications	60
Target Tracking	Radar	61
Unknown	Radar	62
Video Remoting	Radar	63
Experimental	Radar	64
{Disused}		65