K4SU
Unknown1x2Zone 4
License HolderCass, Nathan A
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
Requires Amateur Extra license or higher to apply for this callsign format (1x2).
License History
- License RenewedJan 24, 2026
- Administrative Update AppliedOct 19, 2024
- License RenewedMar 1, 2016
- License IssuedMar 14, 2006
- Vanity Callsign GrantedMar 14, 2006
- License ExpiredFeb 23, 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.