KJ4XP
Active2x2District 4
No competing applications on record.
License HolderTHIEM, MARK C
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationTAMPA, FL
Grant DateFeb 20, 2026
Expiration DateMay 6, 2036
KJ4XP is a 2x2 format amateur radio callsign. It is currently registered to THIEM, MARK C in TAMPA, FL. 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: 40 units(Moderate)
Voice Phonetics
Kilo Juliet Four X-ray Papa
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedFeb 23, 2026
- License RenewedFeb 20, 2026
- Administrative Update AppliedMar 16, 2022
- License RenewedMar 2, 2016
- Administrative Update AppliedJul 9, 2007
- License RenewedFeb 22, 2006
- Administrative Update AppliedApr 22, 2000
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.