SDRangel is the software frontend of a SDR (Software Defined Radio). When used with SDR hardware via USB OTG, it can be used to transmit and receive radio signals. Modems are included for a variety of standards, including: ADS-B, VOR and ILS (aircraft); AIS and Navtex (marine); APT (NOAA weather satellites); AM, FM, SSB, M17, Packet / AX.25 / APRS, FT8 and RTTY (ham radio); Broadcast FM and DAB (broadcast radio); DMR, dPMR, D-Star and YSF (digital voice); NTSC, PAL, DVB-S and DVB-S2 (video); En