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- AMATEUR RADIO LICENSE SEARCH
Callsign: K4OSR
Class: General
Name: Roldan, Ernest A
Address: 6565 E ARIZONA AVE UNIT 5
City: DENVER
State: CO
Zipcode: 80224
Status: Active
Grant Date: 01/03/2020
Expires: 01/03/2030
Uls: FCC Info
Database updated once a week
Ham Callsigns search - version 2.1
