Fldigi
offers several ways to identify the operator or mode that is being
used. This is particularly useful when using a hard to recognize
mode such as Thor, Olivia or MT63.
.
Video Text
Transmitted video text will appear as a sequence of characters on the waterfall. The text can be a brief mode identifier or some user specified text. You can use a small font that always appears as a 2 character wide sequence or a larger font that can be 1 to 4 characters wide. You should be aware that the video signal is a constant energy signal and the content will be spread across multiple characters. The highest s/n at the receiving end will be for 1 character wide video. Small font at 2 character width is next in s/n performance followed by 2 character large font etc.Cw postamble
You can transmit your callsign in CW as a postamble to all modes except of CW (a bit redundant to do that).Reed Solomon Identifier
RSid, Reed Solomon Identifier, is a special transmission designed by Patrick Lindecker, F6CTE, for the modem program MultiPsk. It has been adapted to other modem programs. Fldigi's implementation is compatible with the MultiPsk RSid, but provides a slight variation. If you enable the transmission of RSid by selecting that check box., it will occur at both the beginning and the end of a transmission. The detection of RSid normally only occurs in the near vicinity of the current waterfall tracking point. This cuts down on extraneous RSid detections when the band is crowded and several RSid signals might be present. If you want fldigi to search the entire waterfall for RSid signals you can do so by enabling the "Wide Search Detector". You start the search for a signal based on RS Id by using the main panel switch. You MUST click this button to disable the RS Id search if so RS Id signal is discovered. Fldigi will not transmit while the RS Id button in lit. RS Id Search is turned off when a signal is found. When this occurs the waterfall cursor will move the signal, the mode will change if necessary, and signal decoding will begin..