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AD4SU

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderBUTTELWERTH, LARRY D

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationTAMPA, FL

Grant DateNov 19, 2002

Expiration DateFeb 16, 2013

Cancellation DateFeb 18, 2015

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AD4SU

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderBUTTELWERTH, LARRY D

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationTAMPA, FL

Grant DateNov 19, 2002

Expiration DateFeb 16, 2013

Cancellation DateFeb 18, 2015

Available for ApplicationsFeb 17, 2015

AD4SU is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by BUTTELWERTH, LARRY D in TAMPA, 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 Kokhanyuk, Alexander N on Apr 11, 2022. AD4SU has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 24 units(Light (fast to send))

Voice Phonetics

Alpha Delta Four Sierra Uniform

Readability: 7/10(Good readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License ExpiredFeb 18, 2015
Tax ID (TIN) AddedNov 19, 2002
License RenewedNov 19, 2002

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Kokhanyuk, Alexander NFiled Apr 11, 2022
Not awardedFCC ↗

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FCC data as of Sep 12, 2026 — may be delayed

AD4SU FCC Vanity Status: 1 Competing Application & History