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KD4SJU

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderGUIMARRAES, ANTONIO C M

License ClassNovice

Min. Class RequiredTechnician

LocationDAVIE, FL

Grant DateAug 18, 1992

Expiration DateAug 18, 2002

Cancellation DateAug 19, 2004

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KD4SJU

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderGUIMARRAES, ANTONIO C M

License ClassNovice

Min. Class RequiredTechnician

LocationDAVIE, FL

Grant DateAug 18, 1992

Expiration DateAug 18, 2002

Cancellation DateAug 19, 2004

Available for ApplicationsAug 19, 2004

KD4SJU is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by GUIMARRAES, ANTONIO C M in DAVIE, FL. 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 Calderon-Nieves, Jonathan R on Apr 3, 2019. KD4SJU has 1 recorded FCC license history event.

CW & Voice Analysis

Morse Code

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

CW Weight: 37 units(Moderate)

Voice Phonetics

Kilo Delta Four Sierra Juliet Uniform

Readability: 6/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License ExpiredAug 19, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Calderon-Nieves, Jonathan RFiled Apr 3, 2019
Not awardedFCC ↗

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FCC data as of Sep 4, 2026

KD4SJU FCC Vanity Status: 1 Competing Application & History