KB4AO
Available2x2District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderQUINTERO, LUIS M
License ClassAdvanced
Min. Class RequiredGeneral
LocationMIAMI, FL
Grant DateFeb 7, 2008
Expiration DateApr 7, 2018
Cancellation DateApr 8, 2020
Available for ApplicationsApr 8, 2020
KB4AO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by QUINTERO, LUIS M in MIAMI, FL. 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 Eshbaugh Jr, Mark D on Apr 14, 2026. KB4AO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... ....- .- ---
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Bravo Four Alpha Oscar
Readability: 8/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredApr 8, 2020
- Tax ID (TIN) AddedFeb 7, 2008
- License RenewedFeb 7, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.