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AI4DQ

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderHorn Jr, Robert C

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationMemphis, TN

Grant DateMar 20, 2018

Expiration DateMar 20, 2028

AI4DQ is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Horn Jr, Robert C in Memphis, TN. 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 Horn Jr, Robert C on Mar 2, 2018. AI4DQ has 7 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 28 units(Light (fast to send))

Voice Phonetics

Alpha India Four Delta Quebec

Readability: 7.5/10(High readability)

License History

Administrative Update AppliedJun 9, 2026
License IssuedMar 20, 2018
Vanity Callsign GrantedMar 20, 2018
License CanceledJan 21, 2015
License RenewedNov 19, 2010
License IssuedJan 20, 2004
System-Generated GrantJan 20, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Horn Jr, Robert CFiled Mar 2, 2018
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

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FCC data as of Sep 4, 2026

AI4DQ FCC Vanity Status: 1 Competing Application & History