COFDMTV is based on COFDM (coded orthogonal frequency-division multiplexing) technology:

- 160 ms long OFDM symbols

- 6.25 Hz per sub-carrier

- 1/8 guard interval

- differentially encoded PSK (phase-shift keying) modulation

- systematic polar codes for forward error correction

Currently Modes 14, 15 and 16 are supported:

Using either SPC(2048, 1392), SPC(2048, 1056) or SPC(2048, 712) with CRC32C aided SCL decoding and differential QPSK modulation for the payload.

Only a bandwidth of 1600 Hz is needed and the transmission of either 85, 128 or 170 bytes take about one second with the leading noise and fancy header disabled.

What's New in the Latest Version 1.12

Last updated on Nov 13, 2023

- added configurable repeater delay- added configurable repeater debouncing- internal improvements- updated libs and tools