K4DUI
Active1x3District 4
Competitive callsign — 5 applications filed with the FCC.
License HolderHAVILL, JERRY W
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationBLANCHARD, OK
Grant DateNov 19, 2025
Expiration DateNov 19, 2035
K4DUI is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by HAVILL, JERRY W in BLANCHARD, OK. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Meresse, David A on Oct 13, 2015. K4DUI has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.. ..- ..
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Delta Uniform India
Readability: 7/10(Good readability)
License History
- License RenewedNov 19, 2025
- Administrative Update AppliedAug 27, 2021
- Administrative Update AppliedJun 23, 2020
- License IssuedOct 31, 2015
- Vanity Callsign GrantedOct 31, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.