KM4JB
Active2x2District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderBoulware Jr, John M
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationWendell, NC
Grant DateAug 29, 2025
Expiration DateAug 29, 2035
KM4JB is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Boulware Jr, John M in Wendell, NC. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Boulware Jr, John M on Aug 11, 2025. KM4JB has 10 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -- ....- .--- -...
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Mike Four Juliet Bravo
Readability: 8/10(High readability)
License History
- Vanity Callsign GrantedAug 29, 2025
- License IssuedAug 29, 2025
- License CanceledJan 28, 2022
- Administrative Update AppliedApr 22, 2017
- Vanity Callsign GrantedApr 18, 2017
- License IssuedApr 18, 2017
- License CanceledFeb 5, 2011
- License RenewedDec 21, 2010
- License RenewedJan 5, 2001
- License ModifiedMay 11, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.