K4SZS
Unknown1x3Zone 4
License HolderHayes, John B
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License RenewedJul 1, 2025
- Administrative Update AppliedNov 28, 2020
- Administrative Update AppliedNov 24, 2020
- Administrative Update AppliedOct 6, 2020
- License RenewedMay 9, 2015
- License ModifiedAug 9, 2005
- License IssuedAug 5, 2005
- Vanity Callsign GrantedAug 5, 2005
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.