AB4JO
Active2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderCarvalho, Joseph J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationHollywood, FL
Grant DateAug 12, 2026
Expiration DateOct 8, 2036
AB4JO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Carvalho, Joseph J in Hollywood, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Carvalho, Joseph J on Sep 20, 2016. AB4JO has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.- -... ....- .--- ---
CW Weight: 36 units(Moderate)
Voice Phonetics
Alpha Bravo Four Juliet Oscar
Readability: 7.5/10(High readability)
License History
- License RenewedAug 12, 2026
- Administrative Update AppliedAug 7, 2018
- License IssuedOct 8, 2016
- Vanity Callsign GrantedOct 8, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Carvalho, Joseph JFiled Sep 20, 2016Not awardedFCC ↗