Targeting Laser - to hit 5, no damage, 1 DP, $1,000, 50 lbs; no space. Usable with any type of rocket with the laser guidance link. Does not drain range from a power plant, but is blocked by smoke and paint like any other laser.
Limpet Beacon - When mounted on the outside of a vehicle, the mine gives a +2 to hit for all radar- and laser-guided weapons fired at the vehicle. In addition, all laser- or radar-guided weapons that pass within 4" of an active Limpet Beacon while in flight have a 2 in 6 chance of being diverted toward the vehicle carrying the mine. If a vehicle carrying a Limpet Beacon fires such a weapon, there is no chance the weapon will return. Once a radar- or laser-guided rocket or missile is diverted from its target by a Limpet Beacon must still roll to hit the new target, with the +2 bonus mentioned before.
The Limpet Beacon must be placed on a vehicle by hand, just like a limpet mine. Each one costs $250, and must be activated (there's a small switch on the side) before it will start working. It has negligible weight or space, but does count as one grenade when carried by a pedestrian.