41774259081336_page_27

41774259081336 | page 27 | https://thedailydialectics.com/pdfs/FIOA/41774259081336/41774259081336.pdf

PART Tit. SPEECH SEQURITY EQUIPMENTS 8, WVocoder Systems a, APSAY D809, 6 Single channel full duplex speech security system for use over land line or long distance HF radio, Requires one 3 kc transmission channel, Alternatively it can provide five tele- type channels or one facsimile channel, Useg…