Operator's, organizational, and direct support maintenance manual : encoder-decoder KY-801/GSC (NSN 5895-01-034-1061).

"September 1977."

Operator's, organizational, direct support, and general support maintenance manual : coder/decoder group OX-54/TYC-39(V), NSN 5895-01-098-7101).

"14 October 1983."