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KO4MJJ

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHEFLIN, DOUGLAS S

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationEastover, NC

Grant DateFeb 12, 2021

Expiration DateFeb 12, 2031

Cancellation DateApr 20, 2021

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KO4MJJ

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHEFLIN, DOUGLAS S

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationEastover, NC

Grant DateFeb 12, 2021

Expiration DateFeb 12, 2031

Cancellation DateApr 20, 2021

Available for ApplicationsApr 21, 2023

KO4MJJ is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by HEFLIN, DOUGLAS S in Eastover, NC. 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 Jordan, Michael J on May 3, 2021. KO4MJJ has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 49 units(Heavy (slower to send))

Voice Phonetics

Kilo Oscar Four Mike Juliet Juliet

Readability: 7/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledApr 20, 2021
License ModifiedApr 1, 2021
Administrative Update AppliedMar 23, 2021
License ModifiedFeb 22, 2021
System-Generated GrantFeb 12, 2021
License IssuedFeb 12, 2021

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Jordan, Michael JFiled May 3, 2021
DismissedFCC ↗

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FCC data as of Sep 4, 2026

KO4MJJ FCC Vanity Status: 1 Competing Application & History