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KI4WHO

Active2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHAMMONS, CHARLES E

License ClassAdvanced

Min. Class RequiredTechnician

LocationOAK RIDGE, TN

Grant DateMar 3, 2020

Expiration DateMar 3, 2030

KI4WHO is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by HAMMONS, CHARLES E in OAK RIDGE, 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 WARMACK, JOHN R on Feb 12, 2020. KI4WHO has 7 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 36 units(Moderate)

Voice Phonetics

Kilo India Four Whiskey Hotel Oscar

Readability: 7/10(Good readability)

License History

Vanity Callsign GrantedMar 3, 2020
License IssuedMar 3, 2020
License ExpiredJun 6, 2019
License ModifiedApr 1, 2010
License ModifiedJun 20, 2007
System-Generated GrantJun 5, 2007
License IssuedJun 5, 2007

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

WARMACK, JOHN RFiled Feb 12, 2020
Not awardedFCC ↗

Search external databases

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FCC data as of Jul 30, 2026

KI4WHO FCC Vanity Status: 1 Competing Application & History