AC4LU
Available2x2District 4
Competitive callsign — 2 applications filed with the FCC.
Min. Class RequiredGeneral
Cancellation DateSep 2, 1998
Available for ApplicationsSep 3, 2000
AC4LU is a highly sought-after 2x2 format amateur radio callsign. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Liberty University Signals Exploitation And Analysis Research Cyber Hub (SEARCH) Club on Oct 15, 2026.
CW & Voice Analysis
Morse Code
.- -.-. ....- .-.. ..-
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Alpha Charlie Four Lima Uniform
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
Vanity Application Activity
Competing applications filed with the FCC for this callsign.