WC2A Tatsuo Yamamoto 728 MURPHY DR San Mateo, CA 94402 United States Operator Class EXTRA Previous Callsign Grant Date 03/01/2022 Expire Date 03/01/2032 Codes HVIE - Vanity code - Primary Station Preference List Ads from WC2A on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of