AD9LB DAVID L BERGMAN, Mr 521 E WALNUT MASON CITY, IL 62664 United States Operator Class EXTRA Previous Callsign Grant Date 03/10/2020 Expire Date 03/10/2030 Codes HVIE - Vanity code - Primary Station Preference List Ads from AD9LB on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of