KA4SDR
Active2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderStevens III, Herbert J
License ClassGeneral
Min. Class RequiredTechnician
LocationOcoee, FL
Grant DateFeb 3, 2026
Expiration DateMay 1, 2036
KA4SDR is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Stevens III, Herbert J in Ocoee, 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 Brown, Robert K on Sep 2, 2008. KA4SDR has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .- ....- ... -.. .-.
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Alpha Four Sierra Delta Romeo
Readability: 6.5/10(Good readability)
License History
- License RenewedFeb 3, 2026
- Administrative Update AppliedOct 19, 2024
- Administrative Update AppliedJul 30, 2022
- Administrative Update AppliedAug 22, 2018
- License RenewedFeb 12, 2016
- License ModifiedAug 14, 2007
- Administrative Update AppliedJul 12, 2007
- Tax ID (TIN) AddedMar 9, 2006
- License RenewedMar 9, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.