Fldigi can send and receive morse code from 5 wpm to 200 wpm. The operating controls for CW are found on the Config/CW tab. You can open that tab by selecting the "Configure/Modems" menu item and the clicking on the Modems/CW tab. ... The CW decoder can use one of two different DSP filters.

What can Fldigi do?

Fldigi is a computer program intended for Amateur Radio Digital Modes operation using a PC (Personal Computer). Fldigi operates (as does most similar software) in conjunction with a conventional HF SSB radio transceiver, and uses the PC sound card as the main means of input from the radio, and output to the radio.

What is a CW decoder?

CW Decoder. This program allows CW operators to copy CW code with a computer. The decoded CW is displayed as text or can generate a side tone. There is a spectrum display of the audio with a sliding cursor to select a particular audio for decoding.