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This driver supports the following JJY receivers sold in Japan.
server 127.127.40.X mode 1
server 127.127.40.X mode 2
JJY is the radio station which transmites the JST (Japan Standard Time) in long wave radio. The station JJY is operated by the Communication Research Laboratory. An operating announcement and some information are avaiable from http://www.crl.go.jp/ (English and Japanese) and http://jjy.crl.go.jp/ (Written in Japanese only)
The user is expected to provide a symbolic link to an available serial port device. This is typically performed by a command such as:
ln -s /dev/ttyS0 /dev/jjy0
Windows NT does not support symbolic links to device files. COMX: is the unit used by the driver, based on the refclock unit number, where unit 1 corresponds to COM1: and unit 3 corresponds to COM3:
The driver writes each timecode as received to the clockstats file.