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KZ4TH

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderSumner, David

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationDurham, NC

Grant DateMay 20, 2025

Expiration DateMay 20, 2035

KZ4TH is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Sumner, David in Durham, 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 Helms, Troy on Nov 13, 2023. KZ4TH has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

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

Voice Phonetics

Kilo Zulu Four Tango Hotel

Readability: 8/10(High readability)

License History

System-Generated GrantMay 20, 2025
License IssuedMay 20, 2025

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Helms, TroyFiled Nov 13, 2023
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KZ4TG KZ4TI →

FCC data as of Sep 12, 2026 — may be delayed

KZ4TH FCC Vanity Status: 1 Competing Application & History