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VERY Rare Military Underwater Transducer Sonar Warning System of incoming threat For Sale

VERY Rare Military Underwater Transducer Sonar Warning System of incoming threat
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VERY Rare Military Underwater Transducer Sonar Warning System of incoming threat:
$699.99

The SUS MK-84 Mod 1 underwater sound signal device is an expendable electro-acoustic device which provides one-way acoustic communications with submarines. It can also be used during a tactical exercise. It may be dropped or deployed from fixed-wi aircraft or helicopters as well-as by over-the-side ship-launched methods


The SUS MK-84 Mod 1 is able to transmit any one of five pre-selected coded acoustic signals, each of which may convey a predetermined message to the submarine. Four of these signals consist of a continuous tone that alternates in frequency in accordance with a timing sequence defined in the coded table (see specification). The fifth code is a continuous tone at a single frequency. Third harmonics of the fundamental frequencies are also generated at levels slightly less than those of the fundamentals. A five position switch on the side of the unit accomplishes the settings.


The MK-84 is designed to provide a source level of 160 dB/uPa within 2 seconds of water entry throughout the life of the unit. These are very hard to find and this one is in good collectible condition!



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