[GreenKeys] TTY Switching Systems descriptions

[Nick England]

Brief descriptions of Bellfast, SCATS,TADS, 81D1, 82B1, 83B1, 64C
WE Spec RS-581.0 Section 24
http://www.navy-radio.com/manuals/tty/28-we-rs-sw-sys.pdf

Nick England K4NYW
www.navy-radio.com
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