Radar Warning Receiver (RWR) detects radio emissions from radar systems, it consists of several antennas, a processing unit, a radar library and an Azimuth Indicator (RWR display), and can be controlled by Threat Warning Prime or Threat Warning Auxiliary The main purpose is to issue warnings when a radar signal that may pose a threat is detected, such as a fighter jet's fire control radar. Warnings can then be used manually or automatically to circumvent detected threats. In addition, the distance of the emitter symbol from the center of the scope will not always be proportional to the actual distance, some ambiguities have been introduced.
This is the IP-1150A RWR Azimuth Indicator used along with Raytheon (Litton) AN/ALR-93(V)1
There have few variants for RWR use in the F-16s in difference variants, depends on the CMDS it uses, and each having their own custom modes of operation, azimuth indicator, sounds, controls and direction-finding accuracy.
Note: Different audio recordings may have varying volume levels.
BAE Systems (Loral) AN/ALR-56M
The BAE Systems (Loral) AN/ALR-56M is mostly replaced by Raytheon (Litton) AN/ALR-69(V).
AN/ALR-56M can be receiver signal from C/D band (0.5-2 GHz) and E through J band (2 to 20 GHz), the direction-finding accuracy have 15 degrees (E through J band); omnidirectional (C/D band).
It use IP-1310/ALR for the azimuth indicator (Image below). Note that this is not a monitor, but an oscilloscope.
Element
Type
Position
Function
INT
Rotary pot
0-100
Set display brightness on RWR
Azimuth indicator symbols
RWR Sound
Audio
Information
New airborne radars signal detected
New ground-based radars signal detected
New missile launch detected
Missile launch recycle (still tracking after ~10s)
BIT test
BIT test failed
Raytheon (Litton) AN/ALR-69(V)
Raytheon (Litton) AN/ALR-69(V) can be receiver signal from C/D band (0.5-2 GHz) and E through J band (2 to 20 GHz), the direction-finding accuracy have 15 degrees (E through J band); omnidirectional (C/D band).
It use same azimuth indicator as the AN/ALR-56M IP-1310/ALR(Image below) for the azimuth indicator. Note that this is not a monitor, but an oscilloscope.
Element
Type
Position
Function
INT
Rotary pot
0-100
Set display brightness on RWR
Azimuth indicator symbols
RWR Sound
Audio
Information
New airborne radars signal or ground-based radars signal detected
New missile launch detected
Missile launch recycle (still tracking after ~10s)
BIT test, same as launch tone but repeat 1 time after 0.5s after the first tone end.
Raytheon (Litton) AN/ALR-93(V)1
Raytheon (Litton) AN/ALR-93(V)1 can be receiver signal from C/D band (0.5-2 GHz) and E through J band (2 to 20 GHz), the direction-finding accuracy have 15 degrees (E through J band); omnidirectional (C/D band).
It use IP-1150A for the azimuth indicator (Image below). Note that this is not a monitor, but an oscilloscope.
Element
Type
Position
Information
BRIL
Rotary pot
0 - 100
Set display brightness on RWR
Night and day
(NI in BMS)
2-Way switch
NIGHT
Toggle brightness for night flight
DAY
Toggle brightness for day flight
Azimuth indicator symbols
RWR Sound
Audio
Information
New airborne radars signal or ground-based radars signal detected
Spiked by airborne radars or ground-based radars
New missile launch detected
Elisra SPS-1000V-5
Elisra SPS-1000V-5 can be receiver signal from C through J band (0.5-18 GHz), the direction-finding accuracy have 15 degrees (C through J band). The ELISRA SPS-1000V-5 is used in the IAF F-16C-30 Barak I.
Element
Type
Position
Function
INT
Rotary pot
0-100
Set display brightness on RWR
Azimuth indicator symbols
RWR Sound
Audio
Information
New airborne radars signal or ground-based radars signal detected
New missile launch detected
Elisra SPS-3000
AN/ALR-56M can be receiver signal from C/D band (0.5-2 GHz) and E through J band (2 to 20 GHz), the direction-finding accuracy have 15 degrees (E through J band); omnidirectional (C/D band). The ELISRA SPS-3000V is used in the IAF F-16C-40 Barak II and F-16C-52+ SUFA.
Azimuth indicator symbols
RWR Sound
Same as AN/ALR-93(V)1
Audio
Information
New airborne radars signal or ground-based radars signal detected
Spiked by airborne radars or ground-based radars
New missile launch detected
Thales Airborne Systems Carapace (TASC)
Thales Airborne Systems Carapace (TASC) can be receiver signal C through K band (0.5 to 40 GHz). Notably, it is the only RWR designed for installation in F-16s that offers exceptional direction-finding accuracy of 1 degree (C through K band) across these frequency bands. The Thales Airborne Systems Carapace is used in the F-16AM Block 15 BAF.
Element
Type
Position
Function
INT
Rotary pot
0-100
Set display brightness on RWR
Azimuth indicator symbols
RWR Sound
Audio
Information
New airborne radars signal detected
New ground-based radars signal detected (High volume warning)
