K4DU
Unknown1x2Zone 4
License HolderPattison, Robert E
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
Requires Amateur Extra license or higher to apply for this callsign format (1x2).
License History
- Administrative Update AppliedAug 18, 2020
- License RenewedAug 8, 2016
- License RenewedAug 11, 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.