K4SDX
Unknown1x3Zone 4
License HolderSullivan, Daniel E
License ClassGeneral
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License RenewedJan 1, 2026
- Administrative Update AppliedFeb 6, 2018
- Administrative Update AppliedFeb 1, 2018
- Administrative Update AppliedJan 23, 2018
- License RenewedFeb 2, 2016
- Administrative Update AppliedOct 13, 2012
- License ModifiedApr 7, 2009
- License ModifiedOct 2, 2008
- License IssuedFeb 7, 2006
- Vanity Callsign GrantedFeb 7, 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.