KK4DUK
Cancelled2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderDucksworth, Frederic
License ClassGeneral
Min. Class RequiredTechnician
LocationLake City, FL
Grant DateDec 9, 2025
Cancellation DateAug 11, 2026
Available for ApplicationsAug 12, 2028
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 6 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)
Available Aug 12, 2028 (697 days remaining)
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledAug 11, 2026
- 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.