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The most important method to counter radar jammers is operator training. Any system can be fooled with a jamming signal but a properly trained operator pays attention to the raw video signal and can detect abnormal patterns on the radar screen. The best indicator of jamming effectiveness to the jammer is countermeasures taken by the operator.
Tail fin housing assembly for the AN/ALQ-99 equipment, seen during an EF-111A conversion. The AN/ALQ-99 has been used during the Vietnam War (1972–1973), Operation El Dorado Canyon (1986 American raid in Libya), 1991 Gulf War, Operation Northern Watch (1992–2003), Operation Southern Watch (1997–2003), 1999 Balkans War, 2003 Second Gulf War, and 2011 Operation Odyssey Dawn.
Stationary jammers are more expensive and powerful. They usually have a larger jamming radius and wider frequency band. Strong jammers can require additional cooling as they can overheat. Stationary jammers usually have a range of 100 meters and require a power supply of 230 V. Self-made jammers are low-power devices that work over short ranges ...
Jammers or radio frequency “shields” are also a frequent topic of discussion in online forums dedicated to people who believe that the government or others are singling them out for in-depth ...
A bucket hat (variations of which include the fisherman's hat, Irish country hat and session hat) is a hat with a narrow, downward-sloping brim. Typically, the hat is made from heavy-duty cotton fabric such as denim or canvas , or heavy wool such as tweed , sometimes with metal eyelets placed on the crown of the hat for ventilation.
Radar jammer, a device used in radar jamming and deception; Radio jammer, a device used in radio jamming; Radio-controlled Improvised Explosive Device jammer, a counter-IED device; Mobile phone jammer, an instrument used to prevent cellular phones from receiving signals from base stations
The jammer's continuous transmissions will provide a clear direction to the enemy radar, but no range information. [1] Deception may use a transponder to mimic the radar echo with a delay to indicate incorrect range. [1] Transponders may alternatively increase return echo strength to make a small decoy appear to be a larger target. [1]
To counter this, the jammer has to listen on both frequencies, and broadcast on the one that particular radar is using. To further frustrate these efforts, a radar can rapidly switch between the two frequencies. No matter how quickly the jammer responds, there will be a delay before it can switch and broadcast on the active frequency.