Been trying FT8 for a while now and posted questions on the 'digitalradio' forum but got no responses, so will try here:
1) Running FT-8, when I double-click on a station calling CQ, WSJT-X frequently starts transmitting immediately instead of waiting for the next transmit window. Is this normal? Is it because there's still enough time left for a possible decode on the receiving side? I also notice it often takes multiple answers to a CQ to get a response.
2) How much power are folks running. I sometimes see a very large difference between sent/received signals, especially from stations working Europe. A post on the Flex forum said some are running 100's of watts, up to the full 1500W at times!
3) In the Message section, what is the ~U.S.A. and !Italy etc? Are these DXCC entities and is there any documentation on the use of "~" and "!"? I scanned the most User Guide including FT8 and didn't see it.