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KD4XU

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHERRING JR, FRANK H

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationSmyrna, TN

Grant DateMar 2, 2021

Expiration DateMar 2, 2031

KD4XU is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by HERRING JR, FRANK H in Smyrna, TN. 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 HERRING JR, FRANK H on Feb 12, 2021. KD4XU has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Kilo Delta Four X-ray Uniform

Readability: 7.5/10(High readability)

License History

License IssuedMar 2, 2021
Vanity Callsign GrantedMar 2, 2021

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

HERRING JR, FRANK HFiled Feb 12, 2021
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 4, 2026

KD4XU FCC Vanity Status: 1 Competing Application & History