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AB4Q

Active2x1District 4

Competitive callsign — 1 application filed with the FCC.

License HolderDiaz Silveira, Carlos F

License ClassAmateur Extra

Min. Class RequiredAmateur Extra

LocationMiami, FL

Grant DateApr 8, 2025

Expiration DateApr 26, 2035

AB4Q is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Diaz Silveira, Carlos F in Miami, 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 Thompson, Ed N on Apr 9, 2007. AB4Q has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 27 units(Light (fast to send))

Voice Phonetics

Alpha Bravo Four Quebec

Readability: 8.5/10(High readability)

License History

License RenewedApr 8, 2025
License RenewedFeb 10, 2015
Administrative Update AppliedJun 8, 2010
License RenewedJan 27, 2005

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Thompson, Ed NFiled Apr 9, 2007
DismissedFCC ↗

Search external databases

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FCC data as of Sep 3, 2026

AB4Q FCC Vanity Status: 1 Competing Application & History