Anti-radiation missile
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An anti-radiation missile (ARM) is a missile designed to detect and home in on an enemy radio emission source. Typically, these are designed for use against an enemy radar, although jammers and even radios used for communications can also be targeted in this manner.
HARM on a US Navy F/A-18C
ALARM under the wing of a Tornado
Blohm & Voss BV 246
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The Blohm & Voss BV 246 Hagelkorn was a guided glide bomb developed to bomb specific targets once it was released.
A Blohm & Voss BV 246 glider bomb at RAF Museum, Cosford
Wing, showing the steel spar beneath the cement casing