K5SIO
Unknown1x3Zone 5
License HolderSCHILLING III, RALPH F
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License RenewedJul 8, 2025
- Administrative Update AppliedMar 24, 2020
- License IssuedSep 29, 2015
- Vanity Callsign GrantedSep 29, 2015
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.