ALARM

British air-launched anti-radiation missile designed to loiter by parachute before diving on enemy radar emissions, retired from RAF service in 2013.

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05

km range

Mach

Procurement snapshot

Availability & export

UK export-licensed

Subject to UK SPIRE licensing (ECJU); generally available to allied states.

Channel: Government-to-government or direct

Fielded & proven

Operator data not public

Status: legacy.

Lifecycle cost (est.)

No public unit price to model from.

Interoperability

No standardised NATO calibre / datalink detected in public specs.

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Full specifications

Performance

Speed, range, altitude and engagement capability.

Max speed (Mach) Maximum speed as a multiple of the speed of sound. Mach 2+ is typical for air-superiority fighters.: 2 Mach

Stronger than 47% of missiles
Range Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence.: 93 km

Stronger than 44% of missiles

Firepower

Armament, payload and guidance.

Warhead type Blast-fragmentation, shaped charge (HEAT), penetrator, thermobaric or nuclear-capable.: High-explosive with laser proximity fuze
Guidance How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire.: Passive radar seeker (anti-radiation)

Specifications compiled from public MBDA and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.

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