K0SI
Active1x2District 0
Competitive callsign — 2 applications filed with the FCC.
License HolderCENTRAL MISSOURI RADIO ASSOCIATION
Min. Class RequiredAmateur Extra
LocationColumbia, MO
Grant DateJun 11, 2026
Expiration DateAug 1, 2036
K0SI is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by CENTRAL MISSOURI RADIO ASSOCIATION in Columbia, MO. 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 DE JONG, MARVIN L on Apr 20, 2000. K0SI has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- ... ..
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Kilo Zero Sierra India
Readability: 7/10(Good readability)
License History
- License RenewedJun 11, 2026
- License ModifiedMar 26, 2019
- License RenewedJul 27, 2016
- License RenewedJul 25, 2006
- Tax ID (TIN) AddedAug 26, 2002
- License ModifiedAug 26, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.