[GreenKeys] Navy 82B1 TTY switching system photo - 1959

[Nick England]

http://www.history.navy.mil/our-collections/photography/technology/communications/computers---teletypewriter-networks/usn-710439-us-navy-communications-being-handled-by-the-nation-s-.html

Zillions of 28RT units -

For more info on the Navy's 82B1 system see here -
http://www.navy-radio.com/commsta/82b1.htm

Cheers,
Nick England K4NYW
www.navy-radio.com
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