AN/APR-39(V)1 Radar Warning System (CRT) Control/Indicator Functions
Turns set on. Fully operational after 1-minute warmup.
Turns set off.
Selects mode of operation.
Activates discriminator circuit.
Deactivates discriminator circuit.
When pressed, initiates self-test check (except for antenna and receiver).
Adjusts volume to the intercommunications system.
4.37.1 AN/APR-39(V)1 Operating Procedures.
procedure for turning on and off the RW equipment is as
To prevent damage to the receiver detec-
tor crystals, assure that the radar warn-
ing set antennas are at least 60 meters
from active ground radar antennas or 6
meters from active airborne radar anten-
nas. Allow an extra margin for new, un-
usual, or high power emitters.
1. Equipment on.
PWR switch ON. Allow
1-minute for warm-up.
2. BRIL and filter controls Adjust as desired.
3. AUDIO control Adjust volume as desired.
4. DSCRM switch Set for mission requirement.
5. Equipment off.
PWR switch OFF.
4.37.2 AN/APR-39(V)1 Radar Warning Display Con-
The operating controls of the RW display, located
on the right side of the pilot instrument panel (fig 2-9 and
4-21), are described in table 4-24. The display shows a
line-of-bearing radial stroke for each processed signal.
AN/APR-39(V)1 Radar Warning Display Control/Indicator Functions
Adjust CRT display brightness.
Missile Alert. Flashes on and off to indicate time correlation between missile guidance and
associated tracking radar.
Varies density of red polarized CRT faceplate filter (used for day or night operation) by
moving tang right or left.