Radio: Booby Trap

One night last week, bushy-haired Hans Trippler, 31, a radio ham, made a hurried call to the Detroit police. Trippler had been dismantling a war surplus radio device (bought for $4.90*) to get parts for his transmitter. In the center of the.machine he came upon a 6-in. cylinder labeled "Destructor." The cylinder contained two dynamite caps and a tube of thermite. Trippler's little find fascinated Detroit cops, the Michigan state police, the War Assets Administration, the Military, Air Force and Naval Intelligence and the FBI.

The war surplus set was quickly identified as an I.F.F. transmitter (Identification, Friend or Foe), a highly...

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