KØWRX CARROLL M CULLUM 1027 COLUMBINE DR Cedar Falls, IA 50613-1625 United States Operator Class GENERAL Previous Callsign Grant Date 05/13/2026 Expire Date 06/18/2036 Codes HVIA - Vanity code - Former Primary Station Holder Ads from K0WRX on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of