N4SPP
Unknown1x3Zone 7
License HolderDOERENBERG, FRANK M
License ClassAdvanced
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License RenewedJun 3, 2025
- License RenewedJul 18, 2015
- License ModifiedAug 11, 2010
- Administrative Update AppliedMar 10, 2009
- License RenewedAug 2, 2005
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.