KS4I
Active2x1District 4
Competitive callsign — 11 applications filed with the FCC.
License HolderToher, William S
License ClassGeneral
Min. Class RequiredAmateur Extra
LocationWest Lafayette, IN
Grant DateAug 4, 2026
Expiration DateAug 4, 2036
KS4I is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Toher, William S in West Lafayette, IN. This callsign has attracted significant interest in the amateur radio community, with 11 vanity applications filed with the FCC. The most recent was submitted by Wetter, Christopher B on Aug 17, 2026. KS4I has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ... ....- ..
CW Weight: 19 units(Ultra-light (very fast to send))
Voice Phonetics
Kilo Sierra Four India
Readability: 7.5/10(High readability)
License History
- License IssuedAug 4, 2026
- Vanity Callsign GrantedAug 4, 2026
- License ExpiredJul 16, 2026
- License RenewedMay 28, 2014
- Administrative Update AppliedFeb 21, 2009
- Administrative Update AppliedOct 4, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.