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K4USX

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderMacchione Jr, Edward L

License ClassTechnician

Min. Class RequiredGeneral

LocationGalena, MD

Grant DateJan 24, 2018

Expiration DateJan 24, 2028

K4USX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Macchione Jr, Edward L in Galena, MD. 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 Humelsine, Mary W on Apr 2, 2007. K4USX has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 30 units(Light (fast to send))

Voice Phonetics

Kilo Four Uniform Sierra X-ray

Readability: 7/10(Good readability)

License History

License RenewedJan 24, 2018
License IssuedApr 20, 2007
Vanity Callsign GrantedApr 20, 2007

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Humelsine, Mary WFiled Apr 2, 2007
Not awardedFCC ↗

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FCC data as of Sep 3, 2026

K4USX FCC Vanity Status: 1 Competing Application & History