K4OI
Unknown1x2Zone 4
License HolderWILLIAMS JR, WOODROW W
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
Requires Amateur Extra license or higher to apply for this callsign format (1x2).
License History
- License RenewedNov 21, 2018
- License RenewedDec 13, 2006
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.