KO4SB
Unknown2x2Zone 4
License HolderHERRING, CHARLES E
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (2x2).
License History
- License RenewedFeb 9, 2023
- Administrative Update AppliedMar 23, 2021
- License RenewedJan 29, 2013
- Administrative Update AppliedJan 6, 2009
- License RenewedMar 4, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications detected. Monitor the FCC ULS application search to verify before filing.