W6MTR JOHN D Loschiavo PO BOX 30252 Cromberg, CA 96103 United States Operator Class GENERAL Previous Callsign Grant Date 07/06/2022 Expire Date 11/16/2030 Codes HVIE - Vanity code - Primary Station Preference List Ads from W6MTR on QTH.com Classifieds View Now! Put this form on your page! Enter a Callsign:   Courtesy of