K0SEA
Active1x3District 0
Competitive callsign — 7 applications filed with the FCC.
License HolderJerrett, Harry E
License ClassTechnician
Min. Class RequiredGeneral
LocationOsceola, WI
Grant DateJan 16, 2026
Expiration DateApr 14, 2035
K0SEA is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Jerrett, Harry E in Osceola, WI. This callsign has attracted significant interest in the amateur radio community, with 7 vanity applications filed with the FCC. The most recent was submitted by Angst, Sarah E on Mar 26, 2015. K0SEA has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- ... . .-
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Zero Sierra Echo Alpha
Readability: 7/10(Good readability)
License History
- License RenewedJan 16, 2026
- License IssuedApr 14, 2015
- Vanity Callsign GrantedApr 14, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.