KO4H
Active2x1District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderGerlinger Jr, Louis
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationCLERMONT, FL
Grant DateJun 19, 2026
Expiration DateJun 19, 2036
KO4H is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Gerlinger Jr, Louis in CLERMONT, FL. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Henderson, Martin J on Jun 1, 2026. KO4H has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- ....
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Kilo Oscar Four Hotel
Readability: 8.5/10(High readability)
License History
- License IssuedJun 19, 2026
- Vanity Callsign GrantedJun 19, 2026
- License ExpiredJun 2, 2026
- License RenewedMar 31, 2014
Vanity Application Activity
Competing applications filed with the FCC for this callsign.