K4JAX
Active1x3District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderFLORIDA JUNIOR COLLEGE ARC
Min. Class RequiredGeneral
LocationJACKSONVILLE, FL
Grant DateFeb 22, 2017
Expiration DateMay 20, 2027
K4JAX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by FLORIDA JUNIOR COLLEGE ARC in JACKSONVILLE, FL. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Wilder, Clint D on Aug 4, 2025. K4JAX has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .--- .- -..-
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Four Juliet Alpha X-ray
Readability: 7.5/10(High readability)
License History
- License RenewedFeb 22, 2017
- License RenewedMar 23, 2007
- FRN Association Email SentNov 5, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.