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← Racal USA EMU
Digital Message Device
The KY-879/P is a Digital Message Device (DMD) built around 1981 by
Racal Communications Inc. for the US Special Forces (SF).
It is a small message terminal that allows coded messages to be sent and
received in burst transmissions, to avoid detection by
Radio Direction Finding (DF).
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The design is based on the Racal series of Message Entry and Readout Devices (MEROD),
such as the MA-4248
the MA-4450
and the MA-4480.
It is also known as part of the OA-8990/P Digital Message Device Group
and by its NSN designator 5820-001-100-3194.
For a detailed description of the device and its conections, please
refer to our page about the Racal MA-4450 MEROD.
➤ More information
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The KY-879/P was used by the US Army in combination with the
AN/PRC-70
and AN/PRC-74 radios.
In other countries the Racal MEROD message units
were sometimes used in combination with other radios, such as the
AEG/Telefunken SE-6861.
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- TM 11-5820-887-10
Operator's Manual Digital Message Device Group OA-8990/P
24 October 1983, reprinted from 20 August 1982, scanned by Google.
NSN 5820-01-102-3921
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© Crypto Museum. Created: Tuesday 28 September 2010. Last changed: Saturday, 24 February 2018 - 16:45 CET.
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