KF4EFR
Unknown2x3Zone 4
License HolderOquendo, Marcos A
License ClassGeneral
Min. Class RequiredTechnician
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License RenewedSep 11, 2025
- License RenewedNov 12, 2015
- License RenewedAug 8, 2005
- Tax ID (TIN) AddedJul 20, 2001
- License ModifiedJul 20, 2001
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.