KO4JB
Available2x2District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderLaukaitis, William J
License ClassGeneral
Min. Class RequiredGeneral
LocationMedford, NY
Grant DateJul 9, 2021
Expiration DateJul 9, 2031
Cancellation DateJul 11, 2023
Available for ApplicationsJul 12, 2025
KO4JB is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Laukaitis, William J in Medford, NY. 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 Baker Jr, James W on Aug 25, 2025. KO4JB has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- .--- -...
CW Weight: 39 units(Moderate)
Voice Phonetics
Kilo Oscar Four Juliet Bravo
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License CanceledJul 11, 2023
- Administrative Update AppliedMay 5, 2023
- Administrative Update AppliedMar 18, 2022
- Administrative Update AppliedOct 21, 2021
- Administrative Update AppliedAug 27, 2021
- License IssuedJul 9, 2021
- Vanity Callsign GrantedJul 9, 2021
Vanity Application Activity
Competing applications filed with the FCC for this callsign.