Here's something I tried.
For my BITX40 with DDS I use a PC mic/phones headset. ?My keyer (K8+) has a sidetone that you can turn on/off.
I use my FT-101E in CW mode as a monitor. ?I feed the BITX into my dummy load and tune it to a CW freq.
Then I hold the PTT and tune the 101E and look for the carrier - somewhere near the BITX setting.
I pull the phones plug out of BITX and listen through the speaker. ?I then place the headset mic on top of
the sidetone speaker, start sending some CW and fine tune the 101E till I get a clear signal.
It works great into the dummy load but I'm not game to try it on air. ?Am I really sending CW?
Noel - VK2CAO