N4ATS WILLIAM M GRASSA 4854 SPARROW DRIVE SAINT CLOUD, FL 34772 United States Operator Class ADVANCED Previous Callsign Grant Date 11/05/2019 Expire Date 01/04/2030 Codes HVIE - Vanity code - Primary Station Preference List Ads from N4ATS on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of