DATOTEK DV-505 (VOICE ENCRYPTION)

The DV-505 is Voice Security System and one known place of use was the Falklands War in 1982. Apparently  British intelligence broke the cyphering system. All this according to the copy which accompanied the artifact when it was up for auction on E-bay. It was an American designed device and sold internationally.

Does anyone have more information about this device?
 

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DV-505. Circa:  mid to late 1990s
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Note the front panel markings above the nameplate in Spanish This machine was sold to Argentina according to the E-bay seller. 
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Power supply
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Chassis and circuit boards.
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With lid closed.
All DV-505 photos courtesy E-bay
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Above and below: DV-505 with English markings on front panel. 
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To hear a sample voice encryption that was made by a system similar to the  DV-505, please select this link .The Tokyo Fire Department used voice encryption to protect their communications (Provided by Io Ohta, Japan). 
 

Reference:

1) Io Ohta     IO OHTA <<enzanber(at)g@gmail.com>

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MAy 10/22