KR4JXU
Active2x3District 4
No competing applications on record.
License HolderO Brien, Douglas E
License ClassGeneral
Min. Class RequiredTechnician
LocationHouston, TX
Grant DateFeb 19, 2026
Expiration DateFeb 19, 2036
KR4JXU is a 2x3 format amateur radio callsign. It is currently registered to O Brien, Douglas E in Houston, TX. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
-.- .-. ....- .--- -..- ..-
CW Weight: 42 units(Heavy (slower to send))
Voice Phonetics
Kilo Romeo Four Juliet X-ray Uniform
Readability: 6/10(Good readability)
License History
- License ModifiedApr 14, 2026
- System-Generated GrantFeb 19, 2026
- License IssuedFeb 19, 2026
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.