NM5M ERNEST E SILVERTHORN 6404 CASTLEMERE DR PLANO, TX 75093 United States Operator Class EXTRA Previous Callsign Grant Date 11/16/2019 Expire Date 02/13/2030 Codes HAI - Ham Radio - Individual Ads from NM5M on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of