KR4UG
Active2x2District 4
No competing applications on record.
License HolderGustafson, Joe B
License ClassAdvanced
Min. Class RequiredGeneral
LocationDenver, CO
Grant DateFeb 11, 2026
Expiration DateMar 1, 2034
KR4UG is a 2x2 format amateur radio callsign. It is currently registered to Gustafson, Joe B in Denver, CO. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
-.- .-. ....- ..- --.
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Romeo Four Uniform Golf
Readability: 7.5/10(High readability)
License History
- License RenewedFeb 11, 2026
- License RenewedDec 14, 2013
- Administrative Update AppliedFeb 26, 2008
- License RenewedDec 3, 2003
- Administrative Update AppliedNov 9, 1999
- Administrative Update AppliedNov 9, 1999
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.