K4JWR
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderRobinson, Jonathon W
License ClassTechnician
Min. Class RequiredGeneral
LocationSanta Monica, CA
Grant DateAug 19, 2026
Expiration DateAug 16, 2036
K4JWR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Robinson, Jonathon W in Santa Monica, CA. 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 Ragan, Jerry W on Aug 14, 2023. K4JWR has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .--- .-- .-.
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Four Juliet Whiskey Romeo
Readability: 7/10(Good readability)
License History
- License RenewedAug 19, 2026
- Administrative Update AppliedSep 1, 2020
- License IssuedAug 16, 2016
- Vanity Callsign GrantedAug 16, 2016
- License ExpiredApr 13, 2016
- Tax ID (TIN) AddedJan 21, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.