KK4DUK
Active2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderDucksworth, Frederic
License ClassGeneral
Min. Class RequiredTechnician
LocationLake City, FL
Grant DateDec 9, 2025
Expiration DateDec 9, 2035
KK4DUK is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Ducksworth, Frederic in Lake City, FL. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Ducksworth, Frederic on Sep 23, 2025. KK4DUK has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.- ....- -.. ..- -.-
CW Weight: 38 units(Moderate)
Voice Phonetics
Kilo Kilo Four Delta Uniform Kilo
Readability: 7/10(Good readability)
License History
- License IssuedDec 9, 2025
- Vanity Callsign GrantedDec 9, 2025
- License CanceledSep 13, 2011
- System-Generated GrantAug 22, 2011
- License IssuedAug 22, 2011
Vanity Application Activity
Competing applications filed with the FCC for this callsign.