The latest version of FLdigi, 3.22.10, now has its own, cw audio bandpass filter,
to help filter out any qrq cw edge noises made in TRANSMIT MODE.
Even with 6 milliseconds of rise and fall time, at 75 wpm,
here is a spectrum analyzer picture of the edge noise that is still present:
HERE IS A PICTURE OF THE SPECTRUM ANALYSIS after activating the new FLdigi BANDPASS FILTER
FLdigi has made yet another breakthrough feature to help with QRQ CW copy and QRQ CW sending