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KX4SMH

Active2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHeffner, Steven M

License ClassTechnician

Min. Class RequiredTechnician

LocationWinston Salem, NC

Grant DateMay 7, 2024

Expiration DateJun 25, 2034

KX4SMH is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Heffner, Steven M in Winston Salem, 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 Heffner, Steven M on Jun 7, 2004. KX4SMH has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 35 units(Moderate)

Voice Phonetics

Kilo X-ray Four Sierra Mike Hotel

Readability: 7.5/10(High readability)

License History

License RenewedMay 7, 2024
License RenewedJun 27, 2014
License IssuedJun 25, 2004
Vanity Callsign GrantedJun 25, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Heffner, Steven MFiled Jun 7, 2004
Not awardedFCC ↗

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FCC data as of Sep 12, 2026

KX4SMH FCC Vanity Status: 1 Competing Application & History