Military Radio Cryptographic Remote Control

Background
Description
Photos
Related
Links

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Background 

This showed up on eBay and I couldn't resist.
It's very similar to the C-11166/GRC-206 Universal Radio System Control  URSC which is part of the GRC-206 radio system (also see the MT-6250/GRC-206 rack mount).

Description

Label

Eastern Computers Inc.
Virgina Beach, VA 23452
M67854-95-C-3109 (a 1995 contract number)
p/n 400192-2   s/n 0026
OWS

Connectors

Designation	Function	Panel Connector
J1	DC Pwr?	...B98S 3 sockets
J2	Wired I/O ?	MS27468 ...+98 6 pins
J3	Data I/O	SMA FO
J4	Data I/O	SMA FO
J5	Handset	U-229
J6	Handset	U-229
Power	On/Off	toggle

Controls & Indicators

Front Panel Groupings

Radio/Crypo Control

8 Radios numbered 1 to 8 each with its own 8 character 5x8 alphanumeric display and indicators for Mon, Tx, Rcv & Sec.

Telephone

16 Telephone station buttons numbered 1...15, 1A, Hold; in addition there's two indicators (off hook, hold for each button?)

Intercom

24 Intercom stations LEDs numbered 1 to 24 in addition LEDs for R1, R2 & R3.
Buttons: Listen, Over Ride, All Clear, Intercom with 2 LEDs above each

Intercom/Telephone

5 control buttons each with 2 LEDs above: Conf, Chime, Spare, Com Ans, Rel
A 16 button military Touch Tone key pad

Alarms 

Alarm indicators
ESCape button, LEDs: Local, Remote

10 Buttons each with 2 LEDs above, except Increase & Decrease which are just buttons.

2nd Func (yellow)	Ind Brt (Back Bright)	Hdst Spkr Sel	Spkr Vol (1)
Alarm  Reset (Test *)	Left Ear Vol (2)	Right Ear Vol (3)	Increase
Sys Reset	Side Tone  Vol (4)	Main Vol (5)	Decrease

At the upper left of the front panel there's a black plastic part with a square hole.  It looks as if something plugs into it and is held be a spring loaded ball.
Maybe a directory card with names to go with the device numbers on the front panel?

The C-11166/GRC-206 Universal Radio System Control  URSC communicates with the MT-6250 rack mount holding 4 radios and their associated cryptographic equipment by means of a fiber optic cable with 2 bundles, one for each direction of data travel.  The other end of the fiber optic cable goes to the C11169/GRC-206 Signal Distribution Unit SDU which in turn uses regular electrical cables to interface with the radios.  The C-11166 remote is laid out with the idea that there will be two operators using it at the same time.

This remote does not have that dual operator type layout so maybe the reason for the two U-229 audio connectors is like a number of other military items were they are there to support flexibility in the audio accessories used.

Photos

Fig 1 Connectors

Fig 2 Rugged shipping case

Fig 3 Front panel (machined)

Related

GRC-206
MT-6250/GRC-206 rack mount
C-11166/GRC-206 Universal Radio System Control  URSC
C11169/GRC-206 Signal Distribution Unit SDU
Cryptography - Crypto Patents
Cryptographic Machines
Radios

Links

PRC68, Alphanumeric Index of Web pages, Contact, Products for Sale
Page Created 1 June 2015