41774259081336_page_34

41774259081336 | page 34 | https://thedailydialectics.com/pdfs/FIOA/41774259081336/41774259081336.pdf

—TOR-SHERET ~-SECUREEE INFORMATION 10, Delta Modulation Systems a. APSAY D801 Single channel self-synchronous push-to-talk speech security equipment for use as an intercommunication system over short wire links of excellent frequency response. Employs delta modulation coder operating at 50 kc. Low…