LIN: D03159

GENERAL:

The AN/APR-39A(V)1 Radar Signal Detecting Set is an upgraded version of the AN/APR-39(V)1 system. It utilizes a digital processor, alphanumeric display and a synthetic voice to provide warning of radar directed air defense threat systems.

PHYSICAL CHARACTERISTICS:

The AN/APR-39A(V)1 was designed to be compatible with aircraft provisioned for the AN/APR-39(V)1 system. Some minor aircraft wiring changes are required on selected aircraft. The system has ten line replaceable units consisting of one control unit, one indicator, one processor, two identical receivers, two left spiral antennas, two right spiral antennas and one blade antenna. The total system weight is 16.2 pounds.

THREAT COVERAGE:

This system has a greater threat detection capability than the AN/APR-39(V)1 system. The threat display is changed to alphanumeric as opposed to the strobe in the AN/APR-39(V)1 system. Synthetic voice warning and alphanumeric display symbols occur simultaneously.

AIRCRAFT APPLICABILITY:

AH-1F, AH-64A/D, CH-47D, MH-47E, UH-60A/L, UH-60Q (MEDEVAC), MH-60K, OH-58C/D

SPECIAL TEST EQUIPMENT:

SM-674A/UPM	Simulator (AVUM/AVIM)
MX-9848A/APR-39(V)	Bench Test Set (AVIM)

LIN: Z32335

GENERAL:

The AN/APR-39A(V)2 Radar Signal Detecting Set is an upgraded version of the AN/APR-39A(V)1 and is designed to replace the AN/APR-39(V)2 system. It has human engineering features similar to the AN/APR-39A(V)1 and has added design capabilities to better meet its mission requirements. The system will only be installed on U.S. Navy and U.S. Marine Corps aircraft listed below.

PHYSICAL CHARACTERISTICS:

The AN/APR-39A(V)2 will replace the AN/APR-39(V)2 system in the low and slow flying, fixed and rotary winged aircraft. Wiring changes are required to the installation kit in the aircraft. The system consists of ten line replaceable units as in the AN/APR-39A(V)1. The total system weight is 33 pounds.

THREAT COVERAGE:

This system has much greater threat detection capability than the AN/APR-39A(V)1. It is programmed in ADA and offers more flexibility in reprogramming.

AIRCRAFT APPLICABILITY:

AH-1W (USMC), UH-1N (USMC), V-22 (USMC/USN), CH-46 (USMC), CH-53 (USMC), KC-130 (USMC)

SPECIAL TEST EQUIPMENT:

SM-674A/UPM	Simulator (AVUM/AVIM)
MX-9848A/APR-39(V)	Bench Test Set (AVIM) (Requires the MK-2652 Adapter)

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