KG-84
The KG-84A and KG-84C are encryption devices developed by the U.S. National Security Agency to ensure secure transmission of digital data. The KG-84C is a Dedicated Loop Encryption Device, and both devices are General-Purpose Telegraph Encryption Equipment. The KG-84A is primarily used for point-to-point encrypted communications via landline, microwave, and satellite systems. The KG-84C is an outgrowth of the U.S. Navy high frequency communications program and supports these needs. The KG-84A and KG-84C are devices that operate in simplex, half-duplex, or full-duplex modes. 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 is certified to handle data at all levels of security. The KG-84 is a Controlled Cryptographic Item and is unclassified when unkeyed. 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
- Width 7.5 in
- Depth 15 in
- Weight 23 lb
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