AB6BN CESAR F KATADA, JR 230 ALLEN DR SAN BRUNO, CA 94066 United States Operator Class EXTRA Previous Callsign Grant Date 02/18/2021 Expire Date 04/08/2031 Codes HAI - Ham Radio - Individual Ads from AB6BN on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of