JH0VEQ Matsui and I exchanged emails. We have decided to schedule the event at 12:30 Japan time (3:00 UTC). I played a wach and heard Matsui's voice clearly from the computer. Radio S's don't swing at all, or sometimes S3rd. With S3, I can hear the audio without interruption. If the modulation sound of FreeDV is not heard in the phasing, the voice will be broken.
Today's 21 MHz conditions are poor and the FreeDV signal is sometimes audible, sometimes not. I changed bands to 18 and 24 MHz, but this one had no entry at all!
Still, we were able to communicate with two stations, JA1IAZ and JA1KIH. JA1KIH Sakai has his own BlogIt was the first DX," he wrote in