KX4JR
Available2x2District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderRYAN, JOSEPH A
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationSAINT AUGUSTINE, FL
Grant DateFeb 16, 2008
Expiration DateApr 22, 2018
Cancellation DateApr 23, 2020
Available for ApplicationsApr 23, 2020
KX4JR is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by RYAN, JOSEPH A in SAINT AUGUSTINE, FL. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Rickman, Jason on Aug 5, 2026. KX4JR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -..- ....- .--- .-.
CW Weight: 37 units(Moderate)
Voice Phonetics
Kilo X-ray Four Juliet Romeo
Readability: 7/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredApr 23, 2020
- License RenewedFeb 16, 2008
- License ModifiedJun 1, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.