K4TJ
Active1x2District 4
Competitive callsign — 49 applications filed with the FCC.
License HolderMaddocks, Dennis X
License ClassTechnician
Min. Class RequiredAmateur Extra
LocationRenton, WA
Grant DateSep 26, 2017
Expiration DateSep 26, 2027
K4TJ is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Maddocks, Dennis X in Renton, WA. This callsign has attracted significant interest in the amateur radio community, with 49 vanity applications filed with the FCC. The most recent was submitted by NANCE, HAL E on Feb 17, 2026. K4TJ has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- - .---
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Kilo Four Tango Juliet
Readability: 8/10(High readability)
License History
- Administrative Update AppliedSep 8, 2018
- Vanity Callsign GrantedSep 26, 2017
- License IssuedSep 26, 2017
- Internal Correction AppliedAug 8, 2017
- Internal Correction AppliedAug 8, 2017
- License RenewedAug 15, 2006
- FRN Association Letter SentAug 12, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.