This morning, I was operated on 30m band. And I found not so good signal. As follows no good signal picture.
The center was called signal for me. That problem signal was left side signal.
That signal started before 00 second by each minutes. Therefore receiving station cannot decode this signal.
This station cannot QSO forever.
Sometimes I found these signal on the band. PC clock adjustment action is basic standard for the JT65 operation.
Especially if you can used old PC then you must check PC clock before JT65 operation.