Video Text & ID Transmission


Fldigi can transmit a waterfall video signal which can preceed any transmission except for CW.  It can consist of a Mode ID and or user specified text.  The video appears on the receptors waterfall display and will be right side up if the waterfall moves downward.

The video text and/or ID can be toggled on and off from the Configuration Dialog, Video tab.

If the "Xmt Mode ID" is checked the video signal for identifying the mode will preceed every  transmission.

If the "Xmt Video Text" is checked the video signal which consists of the Video Text will preceed every transmission.

The width of the video in characters can be set to 1, 2, 3 or 4 wide.  Each character takes about 72 Hz so you need to be considerate of other operators on the band.  Do not use the wide video signal unless you are certain it will not interfere with another amateur.

Here are several received waterfall video signals.  These are live captures on a local signal.


DigiPan

MultiPSK

fldigi

fldigi


The video ID can also be invoked via a macro tag.

CW identifier

You can also elect to have a CW identifier sent at the end of every transmission.  The CW identifer consists of "DE <MYCALL>" where <MYCALL> is the operator callsign entered on the Oper tab.  The speed is adjustable from 15 to 40 wpm.  The CW characteristics for the identifier are:
  1. dash / dot ratio - 3:1
  2. word / dot ratio - 7:1
  3. rise / fall times - 6 msec
  4. AFCW frequency at center of current mode
The video ID can also be invoked via a macro tag.