KO4JJB
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderZamites, Marichu R
License ClassTechnician
Min. Class RequiredTechnician
LocationRiverview, FL
Grant DateNov 16, 2020
Expiration DateNov 16, 2030
Cancellation DateDec 5, 2020
Available for ApplicationsDec 6, 2022
KO4JJB is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Zamites, Marichu R in Riverview, 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 Beard, Jonathan J on May 6, 2026. KO4JJB has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- .--- .--- -...
CW Weight: 49 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Juliet Juliet Bravo
Readability: 6.5/10(Good readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledDec 5, 2020
- System-Generated GrantNov 16, 2020
- License IssuedNov 16, 2020
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Beard, Jonathan JFiled May 6, 2026Not awardedFCC ↗