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- AMATEUR RADIO LICENSE SEARCH
Callsign: KO6NMJ
Class: Technician
Name: Yonker, Mason O
City: San Francisco
State: CA
Zipcode: 94116
Status: Active
Grant Date: 05/01/2026
Expires: 05/01/2036
Uls: FCC Info
Database updated once a week
Ham Callsigns search - version 2.1