K4UDQ
Active1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderSOWINSKI, JAMES F
License ClassGeneral
Min. Class RequiredGeneral
LocationHutchinson Island, FL
Grant DateJan 22, 2026
Expiration DateMar 16, 2036
K4UDQ is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by SOWINSKI, JAMES F in Hutchinson Island, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by SOWINSKI, JAMES F on Feb 23, 2006. K4UDQ has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ..- -.. --.-
CW Weight: 34 units(Moderate)
Voice Phonetics
Kilo Four Uniform Delta Quebec
Readability: 7.5/10(High readability)
License History
- License RenewedJan 22, 2026
- Administrative Update AppliedApr 12, 2024
- License RenewedJan 29, 2016
- Vanity Callsign GrantedMar 16, 2006
- License IssuedMar 16, 2006
- Internal Correction AppliedMar 15, 2006
- Internal Correction AppliedMar 15, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- SOWINSKI, JAMES FFiled Feb 23, 2006Not awardedFCC ↗