KR4IUI
Active2x3District 4
No competing applications on record.
License HolderJohnson, Martin A
License ClassTechnician
Min. Class RequiredTechnician
LocationHillsboro, TN
Grant DateJan 9, 2026
Expiration DateJan 9, 2036
KR4IUI is a 2x3 format amateur radio callsign. It is currently registered to Johnson, Martin A in Hillsboro, TN. 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: 28 units(Light (fast to send))
Voice Phonetics
Kilo Romeo Four India Uniform India
Readability: 5.5/10(Moderate readability)
License History
- System-Generated GrantJan 9, 2026
- License IssuedJan 9, 2026
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.