RTTY contesting has a much higher duty cycle, especially when using a single radio and no one is answering your CQs. John KK9A On Feb 15 03:51:39 G4DYA wrote: The FT8 parameters were tweaked slightly during the beta phase prior to the release of WSJT-X 1.8.0, and the TX time was reduced to 12.64 sec, so the duty cycle is now about 42%. 73, Richard G4DYA