K3SMK
Cancelled1x3
License HolderSPERANZA, SEBASTIAN R
License ClassAdvanced
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License IssuedMay 2, 2025
- Vanity Callsign GrantedMay 2, 2025
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.