6metre FM operation in Japan (JA)

here's a little snippet of information that's hard to find:

In Japan, the FM segment is 51.000 to 53.999 MHz in 20 KHz steps. There are no 6m FM repeaters. The 6metre FM calling frequency is 51.000 and most FM activity is from JA to HL. I think the JA's use 52.525 (or the equivalent channel) for data use.