KO4K
Unknown2x1Zone 4
License HolderNEFF, ROBERT H
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
Requires Amateur Extra license or higher to apply for this callsign format (2x1).
License History
- License RenewedMar 12, 2026
- License RenewedMar 1, 2016
- License RenewedMay 16, 2006
- FRN Association Email SentMay 16, 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.