K4UMM
Unknown1x3
License HolderJOHNSTON, ROBERT F
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredMay 17, 2022
- License RenewedMar 12, 2010
- Administrative Update AppliedJun 10, 2004
- Administrative Update AppliedApr 29, 2003
- Internal Correction AppliedJul 11, 2000
- License IssuedMay 16, 2000
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.