KO4OTE
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderDavid, Ralph L
License ClassTechnician
Min. Class RequiredTechnician
LocationPasadena, CA
Grant DateMar 25, 2021
Expiration DateMar 25, 2031
Cancellation DateJul 12, 2021
Available for ApplicationsJul 13, 2023
KO4OTE is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by David, Ralph L in Pasadena, CA. 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 Hunter, Phillip on Feb 9, 2026. KO4OTE has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- --- - .
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Oscar Four Oscar Tango Echo
Readability: 7.5/10(High readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledJul 12, 2021
- System-Generated GrantMar 25, 2021
- License IssuedMar 25, 2021
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Hunter, PhillipFiled Feb 9, 2026Not awardedFCC ↗