KO4WSO
Active2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderMullis, Arthur R
License ClassTechnician
Min. Class RequiredTechnician
LocationRiverview, FL
Grant DateNov 30, 2021
Expiration DateNov 30, 2031
KO4WSO is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Mullis, Arthur R in Riverview, 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 Mullis, Arthur R on Nov 10, 2021. KO4WSO has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- .-- ... ---
CW Weight: 42 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Whiskey Sierra Oscar
Readability: 7/10(Good readability)
License History
- Administrative Update AppliedJul 1, 2025
- Administrative Update AppliedJul 16, 2024
- License IssuedNov 30, 2021
- Vanity Callsign GrantedNov 30, 2021
Vanity Application Activity
Competing applications filed with the FCC for this callsign.