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K4YJA

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderSimpson JR, William H

License ClassTechnician

Min. Class RequiredGeneral

LocationJacksonville, FL

Grant DateApr 19, 2025

Expiration DateApr 19, 2035

K4YJA is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Simpson JR, William H in Jacksonville, 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 Simpson JR, William H on Apr 1, 2025. K4YJA has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 38 units(Moderate)

Voice Phonetics

Kilo Four Yankee Juliet Alpha

Readability: 7.5/10(High readability)

License History

License IssuedApr 19, 2025
Vanity Callsign GrantedApr 19, 2025

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Simpson JR, William HFiled Apr 1, 2025
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4YIV K4YJB →

FCC data as of Sep 4, 2026

K4YJA FCC Vanity Status: 1 Competing Application & History