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K4ZW

Active1x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderCLAERBOUT, KENNETH J

License ClassAmateur Extra

Min. Class RequiredAmateur Extra

LocationSTAFFORD, VA

Grant DateAug 10, 2016

Expiration DateNov 4, 2026

K4ZW is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by CLAERBOUT, KENNETH J in STAFFORD, VA. 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 Brutus, Caleb on Aug 4, 2026. K4ZW has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 29 units(Light (fast to send))

Voice Phonetics

Kilo Four Zulu Whiskey

Readability: 8.5/10(High readability)

License History

License RenewedAug 10, 2016
Administrative Update AppliedJun 22, 2010
License RenewedNov 2, 2006
Administrative Update AppliedJan 17, 2006
Administrative Update AppliedFeb 3, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Brutus, CalebFiled Aug 4, 2026
DismissedFCC ↗

Search external databases

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FCC data as of Sep 3, 2026

K4ZW FCC Vanity Status: 1 Competing Application & History