On June 22, 2018 06:39 UTC SM2EKM (in KP05uw) was heard by JA6JWJ calling CQDX on 50.099 MHz. I live nearby (KP05vs) SM2EKM and in the video clip you can se the announcement on DX.Heat.com and hear him calling CQ. I could not hear any JA station.
My receiving antenna is a military surplus vertical antenna 30-60 MHz. Receiver is the Icom IC-7610 transceiver.
Received JA-stations with WSJT FT8 software. Interface IC-7610 loudspeaker >>> PC microphone.