K4RSO
Unknown1x3Zone 4
License HolderOsborne, Roy S
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredNov 23, 2024
- License ModifiedSep 19, 2013
- License IssuedOct 20, 2012
- Vanity Callsign GrantedOct 20, 2012
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.