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Instructions

Chapter 4

Communications Security Equipment

Section I. TSEC/KY-8

Programming Instructions

TSEC/KY-8

Operating Instructions (with Remote Control
Unit)

TSEC/KY-8

Operating Instructions (without Remote Control
Unit)

Section II. TSEC/KY-38

Programming Instructions

TSEC/KY-38

Operating Instructions

TSEC/KY-38

Local Remedy for Minor Problems

Section III. HYL-3/TSEC

Prestart Operating Procedures (all Modes)

HYL-3/TSEC

Retransmission Procedures

Section IV. TSEC/KY-57

Installation in Manpack Operations

TSEC/KY-57

Loading Procedures

TSEC/KY-57

Operating in the SECURE Mode

Section V. TSEC/KY-65

Installation in Manpack Operations

TSEC/KY-65

Installation in Vehicle Operations
(AN/GRC-193A)

TSEC/KY-65

Installation in Vehicle Operations
(AN/GRC-213)

TSEC/KY-65

Loading Procedures

TSEC/KY-65

Operations

Section VI. TSEC/KG-84A

Description

The TSEC/KG-84A is a dedicated loop encryption device (DLED). It is used to
encrypt/decrypt teletypewriter and digital data traffic on dedicated links. It
can be used for local or remote operations and will operate in the DUPLEX and
the HALFDUPLEX modes. Unlike the TSEC/KW-7, which it replaces, the KG-84A will
operate in the DUPLEX mode without an additional device. It can operate in the
TRANSMIT and RECEIVE modes at the same time.

When used with Radio Teletypewriter Sets AN/GRC-122, AN/GRC-142, AN/VSC-2,
and AN/VSC-3, the Installation Kit MK-2488/G must first be installed.
Interconnecting Box J-4024/U interfaces the KG-84A with Teletypewriter Sets
TT-98/FG, TT76/GGC, TT-122/TG, and TT-4/TG. For complete wiring details of the
KG-84A in radio teletypewriter sets, see appropriate technical manual. Do not
attempt to use the KG-84A without Installation Kit MK-2488/GR.