640
PART 4 4
ELECTRONIC RECONNAISSANCE
AND WARFARE
SYSTEMS
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GROUP 58 COMMUNICATIONS, DETECTION AND COHERENT RADAR EQUIPMENT
Class 5865 Electronic Countermeasures, Counter Countermeasures
and Quick Reaction Capability Equipment
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The jammer is operated by a crew of five.
The SPN-2 jammer comprises the following three
vehicles mounted on the Ural-4320 (KamAZ-4310)
chassis:
- antenna vehicle;
- control vehicle;
- electric power plant vehicle.
The antenna vehicle mounts the following equipment:
- antenna-feeder system comprising a receiving mul-
tiple-beam antenna, sidelobe compensation antenna
and transmitting multiple-beam antenna;
- direction finder;
- frequency determination and reproduction system;
- analysis and control system;
- preliminary and multichannel output power amplifier-
s;
- computer.
The equipment of the control vehicle comprises:
- control panel to ensure autonomous and centralized
control of the jammer;
- data transmitter;
- communications radio sets;
- automatic monitoring and registration system;
- signal simulator.
The electric power plant vehicle mounts:
- 60 kW diesel generator;
- industrial power mains converter.
Basic Characteristics
Operating frequency range, MHz 13,333 - 17,544
Total output power, W 1,100
Sensitivity of jammer receivers, dB/W 90
Range, km:
detection of SL, WC and LAF radars
at direct radio contact of 30 to 50 km
(depending on altitude
of aircraft radar) 130 - 150
determination of SL and WC radar class 70 - 80
Angular limits, deg:
azimuth 0 - 360
elevation -2.5 to +45 (narrow radiation pattern)
-7.5 to +78 (wide radiation pattern)
Accuracy of angular coordinates follow-up, deg:
azimuth 3.75
elevation 1.4
Accuracy of determination of midband
frequency of received signal, MHz up to 3.5
Maximum delay in transmission of repeater jamming signal
counted from instant of reception
of signal by frequency-agile radar, µs10
Maximum time of continuous operation, h 24
AC power supply, V:
400 Hz 220
50 Hz 380
Power consumption, kW 50
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