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USA ← KY-57 ← KY-99
Wireline Adapter for KY-57
The HYX-57/TSEC is a wireline adapter (WLA), or Net Radio Interface (NRI) 1 ,
for the VINSON wideband voice/data encryption device
TSEC/KY-57,
made by Raytheon Corporation (US) around 1974.
It has the same form factor as the KY-57 and
provides the interface between the KY-57
and a standard 2- or 4-wire telephone line,
up to a distance of 16 kilometres (10 miles) [1].
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For longer distances, multiple HYX-57 units can be cascaded
— i.e. mounted back-to-back — to form a repeater.
The device is also known by its national stock number NSN 5810-01-026-9622.
The image on the right shows a typical HYX-57 with the protective rubber caps
fitted over the sockets in order to protect them against dirt and dust.
The device uses the same accessories as the KY-57, such as the mounting
bracket, the battery and the optional power supply unit (PSU).
Apart from the KY-57, it was also used with its backward
compatible successor, the KY-99.
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At present, no further information about the HYX-57 is available.
If you have any further information or documentation that you would like
to share with us, please contact us.
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Net Radio Interface (NRI) was known in the past as Radio-Wire Integration
(RWI). The new name is considered to describe its function more accurately.
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All controls and connections are located at the device's
front panel, with the exception of the power socket, which is located at
the rear. The diagram below gives an overview of the controls.
The terminals for connection of the 2- or 4-wire field lines, are located
at the bottom right. The MODE-selector at the top left is used to select
the required mode of operation (i.e. 2- or 4-wire).
The large connector at the bottom centre, is used for connection to
the KY-57 by means of a CX-13072 cable. Alternatively, it can be used
for connection to a KY-57 compatible COMSEC radio, using the CX-13310/VRC
cable [E].
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The diagram below shows how the HYX-57 is used to connect two
KY-57 devices via standard WD-1 (2-wire) field telephone cable. The
KY-57 is connected to the HYX-57 instead of the radio, using
a CX-13072 cable between the HYX-57 RADIO/KY socket and the
RAD socket of the KY-57.
Alternatively, if a COMSEC enabled SINCGARS radio is used,
the transceiver (RT) can be connected directly to the HYX-57
by means of a CX-13310/VRC cable, as illustrated in the diagram below.
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The HYX-57 is housed in a die-cast aluminium enclosure, which is nearly
identical to that of the KY-57. Access to the interior can be gained via
the top panel, that is held in place by 8 recessed screws. After removing
these screws, the top panel can be removed, and the interior is exposed.
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Inside the case are eight Printed Circuit Boards (PCBs) that are
slotted into a backplane at the bottom. The boards are marked
E-DTx in which 'x' represents a capital letter of the alphabet.
The rearmost board (E-DTS) contains the power circuitry
and is not slotted as it is fixed in place.
The image on the right shows the HYX-57 after the top panel is
taken off and the frontmost PCB (E-DTL)
has been removed. The boards contain a variety of custom-made (OEM)
chips and other parts, of which the majority is made by Raytheon
Corporation, who also manufactured the device.
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- CX-13060
- CX-13061
CX-13071 HYX-57 to PRC-77 CX-13072 HYX-57 to KY-57 CX-13310/VRC HYX-57 to RT 6150-01-444-8013 HYX-57 to KY-99
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- TM 11-5810-256-OP-2, Technical Manual TSEC/KY-57
Headqarters, Department of the Army, Washington, 1 December 1981. 1
TM 11-5810-256-OP-6, Operating Procedures KY-57 WANTED
Operating Procedures for Communications Security Equipment TSEC/KY-57
(with HYX-57/TSEC) FM Secure Remote Communications.
Headqarters, Department of the Army, Washington, 12 May 1983.
- TM 11-5820-890-10-1, SINCGARS ICOM Ground Combat Net Radio
Headqarters, Department of the Army, Washington, 1 September 1992. 2
- TM 11-5820-890-10-3, SINCGARS NON-ICOM Ground Combat Net Radio
Headqarters, Department of the Army, Washington, 1 September 1991. 2
- TB 11-5820-890-10-3, Operation of Wireline Adapter Cable CX-13310/VRC
Headqarters, Department of the Army, Washington, 1 April 1993. 2
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© Crypto Museum. Created: Tuesday 07 March 2017. Last changed: Wednesday, 17 April 2024 - 08:07 CET.
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