K3OBX
Active1x3District 3
Competitive callsign — 4 applications filed with the FCC.
License HolderDuman, Michael E
License ClassGeneral
Min. Class RequiredGeneral
LocationKey Largo, FL
Grant DateMay 5, 2017
Expiration DateMay 5, 2027
K3OBX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Duman, Michael E in Key Largo, FL. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by O'Neil, Matthew S on Aug 26, 2020. K3OBX has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ...-- --- -... -..-
CW Weight: 39 units(Moderate)
Voice Phonetics
Kilo Three Oscar Bravo X-ray
Readability: 8/10(High readability)
License History
- Administrative Update AppliedSep 3, 2025
- Administrative Update AppliedApr 24, 2021
- License RenewedMay 5, 2017
- Administrative Update AppliedAug 16, 2016
- License ModifiedMar 27, 2007
- License IssuedJan 4, 2007
- Vanity Callsign GrantedJan 4, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.