This page has links to documents about the modem behavior and TNC protocols created by Nino KK4HEJ for the TARPN NinoTNC. As of this writing, July 2020, the NinoTNC supports 4 bit-rates, 1200, 2400, 4800 and 9600. The 1200 baud mode is Bell 202. The 2400 baud mode is a new digital audio phase shift keying mode described in the PDF linked below. The 4800 baud mode is a modification of the G3RUH mode where the bits are sent for twice as long. The 9600 baud mode is G3RUH. The NinoTNC supports AX.25 and also Improved layer 2 Protocol. IL2P is described in the PDF linked below. |