For example, the Russians use a 50 baud /200 Hz system that to the ear, sounds like Baudot. Closer examination with tools for viewing waveforms and other data will show this clearly. Among amateur radio, the most common default mode of RTTY is 170 Hz with 45.45Bd. … Radio Teletype (RTTY) Bandwidth85 Hz,170 Hz,450 Hz,850 HzLocationWorldwideRadio Teletype (RTTY) – Signal Identification Wiki www.sigidwiki.com › wiki › Radio_Teletype_(RTTY)