Word: jammers
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Dates: during 1940-1949
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...crack-the-whip maneuver, and tries to steal a lap on the opposition. He is given two minutes to do this and the number of points he gets depends on how many of the opposition he passes. In the meantime, the skaters on the team that has a jammer out try to slow down the members of the other team to keep them from catching the jammer; and when the jammer comes around, his buddies get set to block for him. The enemy, of course, does its all to dump the guy, since this is the only...
...type of jammer, called "Tuba," shot mighty blasts of radio interference from the bluffs of southern England. When British night bombers streamed home from raids, Tuba's beam was a sheltering arm reaching out from home. Within its protection, bombers were safe from Nazi fighters. Nazi radar scopes showed nothing but Tuba's enormous blur...
...radio transmitters are fighting off United Nations' broadcasts with strange and unpleasant noises. When World War II began, Nazi jamming was unpredictable. Today Germany, Italy and Japan all jam regularly, systematically, most of the time.* In spite of their efforts, their jamming is far from 100% effective. The jammer's basic difficulty is that a determined listener can follow a speaker's voice through almost any kind of a din, can grasp the gist of a message even though he hears only a word here & there...