DESCRIPTION/FUNCTION

The KG-40/40A is a half-duplex digital device used to provide cryptographic security protection for Navy Link 11 and any data communications meeting Tactical Data Information Link (TADIL) A data standards. It links the computer and the data terminal set. The KG-40A serial configuration (KG-40A-S) is used in the Airborne Tactical Data System (ATDS) and the parallel configuration (KG-40A-P) is used in the Navy Tactical Data System (NTDS).

The KG-40A is a mandatory modified version of the older KG-40, which incorporates variable fill capability. The modification entails replacement of a printed circuit board (motherboard) and the front panel assembly. The KG-40A provides enhanced security using an improved cryptographic algorithm and electronic key capability. Because the KG-40A key is a standard 128-bit key, it can only be keyed by the AN/CYZ-10 Data Transfer Device (DTD) or a KOI-18 Common Fill Device (CFD). It cannot accept key from the KYK-13 Electronic Transfer Device (ETD) or from the KYX-15 Net Control Device (NCD). The KG-40A is an UNCLASSIFIED controlled cryptographic item (CCI) when unkeyed and is interoperable with the KG-40. When the KG-40A is keyed, classification equals that of the key installed.

The KG-40A peripheral equipment includes the MT-4417/S Parallel Mount, MT-4416/A Serial Mount, and KGX-40A Remote Control Unit (RCU).

CHARACTERISTICS

Physical Characteristics

Equipment

Height (in)

Width (in)

Depth (in)

Weight (lb)

Data Rate (Kbps)

KG-40A (P/S)	7.60	5.94	15.479	24	0 to 9.6
KGX-40A RCU	4.125	5.75	7.75	4.0	0 to 9.6
MT-4417/S	9.28	8.76	21.71	12.5	N/A
MT-4416/A	8.11	8.5	18	12.5	N/A

Power:

KG-40A(S)	120 Vac ±10%, 45 to 65 Hz or 380 to 420 Hz, single phase, 26W
KG-40A(P)	120 Vac ±10%

Environmental:

KG-40A(S)
Operating Temperature:	-54 to 71 °C (continuous operation)
	-54 to 95 °C (intermittent ½ hr max.)
Altitude:	Sea Level to 70,000 ft.
KG-40A(P)
Operating Temperature:	0 to 50 °C (continuous operation)
Altitude:	Sea Level to 7,000 ft

MTBF:   1,000 hours

LIFE CYCLE SUPPORT

• Primary Inventory Control Activity (PICA): Naval Inventory Control Ponit (NAVICP), Mechanics PA
• In-Service Engineering Agent (ISEA): SPAWARSYSCEN Charleston (See Points of Contact below)

LIFE CYCLE DOCUMENTATION

• Navy Training System Plan (NTSP): Limited Maintenance, Fleet Training Center, Norfolk, VA
• Integrated Logistics Support Plan (ILSP): 31 Mar 86
• Technical Manuals (TMs): Depot Level KAM-270C (Volumes 1, 2, and 3), LMM-1B, Operator Level KAO-230A
• User Logistics Support Summary (ULSS): P4110-1005 SPAWARSYSCEN Charleston, 31 Oct 96 (Draft)
• Computer Resources Life Cycle Management Plan (CRLCMP): SPAWARSYSCEN Charleston 31 Mar 86 (Draft)
• Implementation Plan: SPAWARSYSCEN Charleston Jan 98 (Draft)

REPAIR

• Contact Director COMSEC Material Systems (DCMS) in accordance with CMS 5A "The policies and Procedures for issuing accounting, handling, safeguarding, and disposing of COMSEC Communications Security Manual" article 410 for repair/disposition instructions.

Crypto Repair Facility (CRF)

East Coast:  Contact CRF - Norfolk Naval Shipyard

         Commercial (757) 396-5395/6

         DSN 961-5395/6

West Coast: Contact CRF - Naval Station San Diego

         Commercial (619) 556-6175/8, 1886

         DSN 526-6175/8, 1886

POINTS OF CONTACT

SPAWARSYSCEN Charleston Acquisition: Code 752JD

Commercial Telephone (843) 218-4281

Defense Switched Network (DSN) 588-4281

Navy Information Systems Security (INFOSEC)
Technical Assistance Center 1 (800) 304-4636

SPAWARSYSCOM Cryptographic Data Systems Manager: PMW 161-3C

Commercial Telephone (619) 524-7886

Defense Switched Network (DSN) 524-7886

ACQUISITION CATEGORY/AUTHORITY

Non-ACAT;   commercial off the shelf (COTS) module

CONTRACT INFORMATION

Acquisition Agent: SPAWARSYSCEN Charleston Code 752

Manufacturer:

• Cincinnati Electronics Corp. (First production of KG-40A)
• Group Technologies Corp. (Current production of KG-40A

UNIT PRICE

No longer produced