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Below Radar

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Below Radar is an aircraft specialization in Battlefield 3 and Battlefield 4. It is a permanent upgrade, meaning that it does not have to be selected at the Customization screen unlike other specializations. It is also a passive upgrade - it is not activated via pressing a button like IR Flares for example, instead it takes effect when flying at a low altitude.

Battlefield 3Edit

Below Radar
BF3BLBelowRadar
Laser Painter (AH) Guided Missile (SH) Extinguisher (Jet) ECM Jammer (AH) Laser Painter (SH) Maintenance (Jet)
Vehicle Type

Attack Helicopter
Scout Helicopter
Jet

Special Feature

Protection from heat-seeking and spotting at low altitude

Unlocked At

37000 AH score
32000 SH score
15000 Jet score

Customization Slot

Permanent Upgrade

"When flying at low altitudes your heat signature is decreased, hiding you from enemy radar and preventing enemy air-to-air missile systems from locking onto you."
— Battlelog description

Below Radar decreases the thermal signature of aircraft flying at low altitude. It hinders spotting and prevents weapon lock from heat-seeking weapons from other aircraft. It also protects against weapon locks from anti-air ground vehicles. It is activated after flying at a low altitude for about 3 seconds, preventing enemy heat-seeking air-to-air missiles from locking on to the player's aircraft.

Below Radar does not protect against shoulder-launched anti-air weapons (Stinger/Igla), nor was it designed to. The user must decide whether the threat from enemy air vehicles outweighs the threat from ground forces.

Compared to Stealth, it allows helicopters to be more effective at close ground support. Low-flying aircraft are, however, more vulnerable to ground fire, including unguided or wire guided rockets, as well as fire from armored vehicles.

To identify if Below Radar is passively activated, look for the altimeter on the heads-up display (HUD) on the aircraft the player is in. It will be somewhere on the side of the screen, representing altitude from ground level as a 1 to 3 digit number, possibly in meters or feet. For Attack and Scout Helicopters, the specialization is activated at 25 or below, which also turns the aircraft's altimeter red, signifying both a dangerously low altitude, and Below Radar active.


Battlefield 4Edit

Below Radar
Vehicle Type

Attack Helicopter
Scout Helicopter
Transport Helicopter
Stealth Jet
Attack Jet

Special Feature

Protection from heat-seeking missiles at low altitude

Unlocked At

Default

Customization Slot

Permanent Upgrade

Below Radar is a permanent vehicle specialization introduced to Battlefield 4 with the Community Operations expansion, and is enabled by default for all air vehicles. It functions almost identically to its Battlefield 3 counterpart, but it is available by default and does not hinder Spotting. Below Radar will protect against weapon locks from all anti-air vehicle missiles, including those from Mobile Anti-Air vehicles. It is activated by flying below 25 meters in all Helicopters and below 50 meters in all Jets.

Below Radar presents an effective counter to Passive Radar missiles, as they will be unable to continue tracking once the aircraft is low enough. Heat Seekers and Active Radar missiles will continue tracking if they have already been fired after a lock is achieved, however.

Like its predecessor, Below Radar does not protect against shoulder-fired AA missiles, like the FIM-92 Stinger, SA-18 Igla, and HVM-II. Along with this, flying low will make aircraft more vulnerable to ground fire from dumb-fire and wire guided rockets as well as other ground vehicles, so avoiding heavy traffic areas when going Below Radar is advisable to avoid being fired at from the ground.

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