KR4KEN
Active2x3District 4
Competitive callsign — 10 applications filed with the FCC.
License HolderSTEWART, MATTHEW A
License ClassTechnician
Min. Class RequiredTechnician
LocationSan Bruno, CA
Grant DateApr 27, 2017
Expiration DateJun 12, 2027
KR4KEN is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by STEWART, MATTHEW A in San Bruno, CA. This callsign has attracted significant interest in the amateur radio community, with 10 vanity applications filed with the FCC. The most recent was submitted by Baisley, Branden M on Jan 15, 2026. KR4KEN has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- -.- . -.
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Romeo Four Kilo Echo November
Readability: 6.5/10(Good readability)
License History
- License RenewedApr 27, 2017
- Administrative Update AppliedFeb 12, 2013
- Administrative Update AppliedJun 25, 2011
- Administrative Update AppliedNov 30, 2010
- Administrative Update AppliedAug 8, 2008
- License IssuedJun 12, 2007
- Vanity Callsign GrantedJun 12, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.