|Only Enigma Machine in the World that you can touch|
|Large Hi Profile Sign|
SINCGARS Military Radios
SINCGARS Tactical Radios. Top unit is SINCGARS ASIP while bottom unit is SINCGARS ICOM, in vehicle mount rack.
|Different type of HF portable|
Note that the classical KY-57 uses a digital data stream at 16 k bits per second and so needs what's called a wide band radio channel. This is why military radios have 25 kHz channel spacing whereas commercial plain text radios use a 5 kHz channel spacing. Becasue of this need for bandwidth the VINSON system will not work on H.F. radios, only VHF and UHF wideband radios.
The Frequency hopping aspect of radios like the SINCGARS and Have Quick makes it difficult for an enemy to get a bearing on a transmitter, but does not provide secure voice transmission. That's why these radios either use a KY-57 or KY-58 or have an equivalent function built-in.
The KY-57/58/67 support OTAR, Over The Air Rekeying. This can be done once the KY-57 has a Key Encryption Key (KEK) loaded in variable slot 6. The new dkeys are transmitted in the clear as Black keys and converted into Red keys by the KEK as they are loaded into the slots. Note the KEK can not be sent over the air and needs to be loaded locally.
|Cray Super Computer|
|PRD-1 in Vietnam display|
|Voice Scrambling Technology|