STANAG 4285

STANAG 4285 (officially stylized as STANAG 4285), is a NATO HF radio technical standard for text-based radio broadcasts. It corresponds to "NATO mode" in the US military standard MIL-STD-188-110B.Hugh Stegman, [https://worldradiohistory.com/hd2/IDX-Short-Wave/Monitoring-Times-IDX/00s/Monitoring-Times-2009-07-OCR-Page-0030.pdf "Demystifying STANAG 4285"], ''Monitoring Times" 2009-07 p. 30

STANAG 4285 specifies a method to communicate text over a radio link. One 1800 Hz tone is modulated using phase-shift keying with eight states (8PSK). The symbol rate is 2400 tones per second. This results in signal taking up a 2400 Hz bandwidth from 600 to 3000 Hz. The data rate is 1200, 2400 or 2400 bits per second.