SPN-2 Powerful Noise Jamming System

Powerful Noise Jamming System

Mission

The SPN-2 (1RL248-2) noise jamming system is designed to deny enemy reconnaissance and observation of area and smallsize ground objects by airborne side-looking radars, air-to-surface guided weapons control radars, as well as navigation and low-altitude flight control radars.

The SPN-2 system can suppress two sidelooking radars, or two low-altitude flight control radars, or up to six weapons control radars in two directions simultaneously. Suppression can be carried out depending on the antenna beam width: within a 10x45-deg sector (narrow beam mode) or a 45x45-deg sector (wide beam mode).

Operating frequency band, MHz 13,333-17,544 Total poweroutput, W 1,100 Receiver sensitivity, dB/W -90

Detection/suppression range, km: air-launched weapon control radars not less than 130-150

side-lookingradars at least 60 (one radar) at least 40 (two radars)

Composition

• antenna vehicle with antenna-feeder system and associated equipment • combat control vehicle fitted with communications, data transmission, testing and recording systems • electric power supply system including a 60 kW diesel generator and industrial electric converter

low-altitude flight control radars

Angular coverage limits, deg: azimuth elevation at least 50 (one radar) at least 30 (two radars)

0 - 360 -2.5…+45

Instantcoveragesector, deg: Angularcoordinates measurement accuracy, deg: in azimuth in elevation

45 10 Number of beams in instant coverage sector 24

Types of jamming signals: • quasi-continuous noise/masking jamming of either selective (6 to 19 MHz) or barrage (260 to 270 MHz) type; • repeater noise jamming, if the hostile radar being suppressed operates in the pulse-topulse frequency agility mode.

All components of the SPN-2 jamming system are mounted on a self-propelled highmobility wheeled chassis, and are operated by a crew of five.

Paraxial beam width, deg: in azimuth in elevation Repeater jamming signal delay (after receiving signal of the hostile frequency-hopping radar), microsec Max continuous operation time, hrs AC power supply, V: 400 Hz 50 Hz Power consumption, kW 7.5 2.5

not more than 15 24

220 380 50