W6OU JAMES H OKUBO PO BOX 2019 YORBA LINDA, CA 92885 United States Operator Class EXTRA Previous Callsign Grant Date 03/10/2026 Expire Date 06/05/2036 Codes HAI - Ham Radio - Individual Ads from W6OU on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of