KB0JEF
Cancelled2x3District 0
Competitive callsign — 2 applications filed with the FCC.
License HolderDvorak, Jeffrey J
License ClassTechnician
Min. Class RequiredTechnician
LocationSaint Michael, MN
Grant DateAug 5, 2025
Cancellation DateDec 9, 2025
Available for ApplicationsDec 10, 2027
KB0JEF is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Dvorak, Jeffrey J in Saint Michael, MN. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Dvorak, Jeffrey J on Jul 16, 2025. KB0JEF has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... ----- .--- . ..-.
CW Weight: 45 units(Heavy (slower to send))
Voice Phonetics
Kilo Bravo Zero Juliet Echo Foxtrot
Readability: 6.5/10(Good readability)
Available Dec 10, 2027 (518 days remaining)
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledDec 9, 2025
- Administrative Update AppliedNov 19, 2025
- License IssuedAug 5, 2025
- Vanity Callsign GrantedAug 5, 2025
- License CanceledSep 6, 2017
- License ModifiedApr 17, 2017
- Vanity Callsign GrantedOct 18, 2016
- License IssuedOct 18, 2016
- License ExpiredJul 10, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.