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KZ4FC

Active2x2District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderO NEILL ARROYO, RAFAEL

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationSAN JUAN, PR

Grant DateAug 20, 2019

Expiration DateAug 20, 2029

KZ4FC is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by O NEILL ARROYO, RAFAEL in SAN JUAN, PR. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Carr, Fred D on Mar 8, 2007. KZ4FC has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 36 units(Moderate)

Voice Phonetics

Kilo Zulu Four Foxtrot Charlie

Readability: 8/10(High readability)

License History

Administrative Update AppliedJan 7, 2025
Administrative Update AppliedApr 10, 2024
License IssuedMar 8, 2024
System-Generated GrantMar 8, 2024

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Carr, Fred DFiled Mar 8, 2007
Not awardedFCC ↗
ELKINS, LESLIE RFiled Mar 8, 2007
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

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FCC data as of Sep 12, 2026

KZ4FC FCC Vanity Status: 2 Competing Applications & History