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K4ZJJ

Active1x3District 4

Competitive callsign — 3 applications filed with the FCC.

License HolderDEMARKLES, JOSH R

License ClassTechnician

Min. Class RequiredGeneral

LocationPOMONA, CA

Grant DateJul 8, 2025

Expiration DateJul 8, 2035

K4ZJJ is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by DEMARKLES, JOSH R in POMONA, CA. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Johnson, Zachary on Jun 20, 2025. K4ZJJ has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 42 units(Heavy (slower to send))

Voice Phonetics

Kilo Four Zulu Juliet Juliet

Readability: 7/10(Good readability)

License History

License IssuedJul 8, 2025
Vanity Callsign GrantedJul 8, 2025
License CanceledJul 21, 2014
Vanity Callsign GrantedDec 13, 2013
License IssuedDec 13, 2013

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Johnson, ZacharyFiled Jun 20, 2025
Not awardedFCC ↗
Jones, John CFiled Dec 18, 2023
Not awardedFCC ↗
PLOTH SR, GEORGE FFiled Nov 25, 2013
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4ZJD K4ZKA →

FCC data as of Sep 4, 2026

K4ZJJ FCC Vanity Status: 3 Competing Applications & History