Fldigi is a software modem for Amateur Radio use. It is a sound card based
program that is used for both transmitting and receiving data in any of the
following modes:

* BPSK and QPSK 31, 63, 125, 250 (both), and 63F and 500 (BPSK only)
* PSKR 125, 250, and 500
* CW speeds from 5 to 200 wpm
* DominoEX 4, 5, 8, 11, 16 and 22; also with FEC
* Hellschreiber Feld Hell, Slow Hell, Hell x5/x9, FSKHell(-105) and Hell 80
* MFSK 4, 8, 11, 16, 22, 31, 32 and 64; most with image support
* MT63 500, 1000 and 2000
* OLIVIA various tones and bandwidths
* RTTY various baud rates, shifts, nbr. of data bits, etc.
* THOR 4, 5, 8, 11, 16 and 22
* Throb and ThrobX 1, 2, and 4
* WWV receive only - calibrate your sound card to WWV
* Frequency Analysis receive only - measure the frequency of a carrier

Fldigi can also control a transceiver using Hamlib or RigCAT I/O, perform
online or cdrom QRZ queries, log QSOs with the built-in logbook or Xlog,
and send reception reports to the PSK Automatic Propagation Reporter.