K4MJR
Unknown1x3Zone 4
License HolderRobertson, Mitchell J
License ClassGeneral
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ModifiedAug 18, 2025
- License ModifiedJul 13, 2021
- License IssuedDec 31, 2019
- Vanity Callsign GrantedDec 31, 2019
- License ExpiredDec 28, 2016
- Vanity Callsign GrantedDec 24, 2004
- License IssuedDec 24, 2004
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.