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1942 U-BOAT SOUND GEAR
Posted by: PAUL J. PERKINS ()
Date: June 12, 2000 10:16PM

REQUEST THE FREQUENCY RESPONSE OF 1942 U-BOAT UNDERWATER LISTENING GEAR, CHARACTERISTICS, MAGNETOSTRICTION TYPE OR CRYSTAL ELEMENTS ETC., WERE ANY EXCLUSIVE SOUND APPROACHES MADE ON THEIR TARGETS?

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1942 U-BOAT SOUND GEAR PAUL J. PERKINS 06/12/2000 10:16PM


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