K4XM
Unknown1x2
License HolderDORWORTH, JOHN M
Min. Class RequiredAmateur Extra
Requires Amateur Extra license or higher to apply for this callsign format (1x2).
License History
- Administrative Update AppliedMay 4, 2026
- License RenewedMar 26, 2026
- License RenewedMar 15, 2016
- License RenewedMar 4, 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.