This chart is broadcast daily at 0750 UTC on the common Japanese fishery frequency of 8658.0 kHz USB. The tabular data concern recent market transactions by boats arriving with fresh catches of Pacific Saury. This is a type of mackerel pike widely consumed in Japan and East Asia.
JFW is Fukushima Prefectural Fishery Radio, from a site in central Japan. It also broadcasts sea temperature charts and other types of reports, but only this sked has been copied so far in Southern California.
All fax signals are tuned 1.9 kHz lower than their listed frequencies.