KU4SP
Unknown2x2Zone 4
License HolderCastillo, Rene R
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (2x2).
License History
- License CanceledFeb 13, 2001
- License ModifiedJan 31, 2001
- License ModifiedDec 21, 2000
- License ModifiedJun 10, 2000
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.