KR4U
Active2x1District 4
Competitive callsign — 1 application filed with the FCC.
License HolderTREWIN, DAVID W
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationSAINT PETERSBURG, FL
Grant DateJul 31, 2026
Expiration DateSep 30, 2036
KR4U is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by TREWIN, DAVID W in SAINT PETERSBURG, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Reeves, Kevin W on Dec 15, 2017. KR4U has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- ..-
CW Weight: 24 units(Light (fast to send))
Voice Phonetics
Kilo Romeo Four Uniform
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedAug 3, 2026
- License RenewedJul 31, 2026
- License RenewedJul 18, 2016
- License RenewedJul 18, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Reeves, Kevin WFiled Dec 15, 2017DismissedFCC ↗