TM 1-1510-262-10
4-4. RADAR SIGNAL DETECTING SET (AN/APR-39(V) 2 ).
To prevent damage to the receiver detector crystals, assure that the AN/APR-39(V)2 antennas are at
least 60 meters from active ground radar antennas or 6 meters from active airborne radar antennas.
Allow an extra margin for new, unusual, or high power antennas.
The radar signal detecting set indicates the relative position of search radar stations. The radar signal detecting set
is controlled by the APR-39 control head located on the copilot s side of the instrument panel . Audio warning signals
are applied to the pilot and copilot s headsets. The radar signal detecting set is protected by the 7.5-ampere circuit
breaker placarded APR-39 , located on the mission control panel (Fig. 4-1). The associated antennas are shown in
igure 2-1. For operating instructions, refer to TM 11-5841-283-12.
4-5. RADAR SIGNAL DETECTING SET (AN/APR-44) .
The radar signal detecting set indicates the relative position of search radar emitters. Through graphic symbology,
the type of tracking radar emitters may be identiied. Unknown emitter origins are also depicted. Audio warning
signals are applied to the pilot and copilot s headsets. The radar signal detecting set is controlled by the APR-44
control head located on the copilot s side of the instrument panel . The radar signal detecting set is protected by
the 7.5-ampere circuit breaker placarded APR-39 , located on the mission control panel (Fig. 4-1). The associated
antennas are shown in igure 2-1. Complete operating instructions are to be obtained from the appropriate manuals.
4-6. DELETED.
4-7. DELETED.
SECTION III. CARGO HANDLING
NOT APPLICABLE
SECTION IV. PASSIVE DEFENSE
NOT APPLICABLE
4-27/(4-28 blank)
Change 1
