KG-84

TheKG-84AandKG-84Careencryptiondevices developed by theU.S.National Security Agency(NSA) to ensuresecure transmissionof digital data. The KG-84C is a Dedicated Loop Encryption Device (DLED), and both devices are General-Purpose Telegraph Encryption Equipment (GPTEE). The KG-84A is primarily used for point-to-point encrypted communications vialandline,microwave,andsatellitesystems. The KG-84C is an outgrowth of theU.S. Navy high frequency(HF) communications program and supports these needs. The KG-84A and KG-84C are devices that operate insimplex,half-duplex,orfull-duplexmodes. The KG-84C contains all of the KG-84 and KG-84A modes, plus a variable update counter, improved HF performance, synchronous out-of-sync detection, asynchronous cipher text, plain text, bypass, and European TELEX protocol. The KG-84 (A/C) is certified to handle data at all levels of security. The KG-84 (A/C) is aControlled Cryptographic Item(CCI) and isunclassifiedwhenunkeyed.Keyed KG-84 equipment assumes the classification level equal to that of the keying material used.

Characteristics

KG-84 A/C physical characteristics

Height 7.8 in (198 mm)
Width 7.5 in (191 mm)
Depth 15 in (381 mm)
Weight 23 lb (10 kg)

Data rate

KG-84A 256 kbit/s synchronous and 9.6 kbit/s asynchronous
KG-84C Up to 64 kbit/s synchronous and 9.6 kbit/s asynchronous

Power

24 V DC, 15 W
115 V AC
220 V AC

Operating temperature

Operating temperature:0 to 55 °C

MTBF

69,000 hours (7.9 years)

External links

More info on KG-84;see also[1].