K5OST
Unknown1x3Zone 5
License HolderEFFRON, FRANK S
License ClassAdvanced
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredJan 31, 2017
- License RenewedJan 28, 2005
- FRN Association Letter SentJan 28, 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.