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KO4JKB

Active2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderARBOL OLIVO AMATEUR RADIO CLUB

Min. Class RequiredTechnician

LocationLA MIRADA, CA

Grant DateDec 12, 2017

Expiration DateDec 12, 2027

KO4JKB is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by ARBOL OLIVO AMATEUR RADIO CLUB in LA MIRADA, CA. 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 Balassa, Julie K on Nov 22, 2017. KO4JKB has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

-.- --- ....- .--- -.- -...

CW Weight: 46 units(Heavy (slower to send))

Voice Phonetics

Kilo Oscar Four Juliet Kilo Bravo

Readability: 7/10(Good readability)

License History

License IssuedDec 12, 2017
Vanity Callsign GrantedDec 12, 2017

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Balassa, Julie KFiled Nov 22, 2017
Not awardedFCC ↗

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← KO4JKA KO4JKC →

FCC data as of Sep 4, 2026

KO4JKB FCC Vanity Status: 1 Competing Application & History