All: Seems to be some confusion about what message to send when running JT65 and what the reports mean. That's understandable since the mode was developed for EME and not HF.
The morse letter "O" (not zero) is used during EME CW QSO's to indicate that signals are readable and both calls were copied. The JT65 mode uses the digital version of this. The "RO" means "ROGER" I've received your "O" report and your report is also "O". If you're not sure what message to send, hit F5 with WSJT running and a small help window will pop-up. It shows the correct message to send for each mode. Hope this helps... Tony KT2Q
