KR4OBI
Active2x3District 4
No competing applications on record.
License HolderALLEN, DAVID S
License ClassAdvanced
Min. Class RequiredTechnician
LocationSunnyvale, CA
Grant DateAug 1, 2026
Expiration DateAug 1, 2036
KR4OBI is a 2x3 format amateur radio callsign. It is currently registered to ALLEN, DAVID S in Sunnyvale, CA. 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: 36 units(Moderate)
Voice Phonetics
Kilo Romeo Four Oscar Bravo India
Readability: 6.5/10(Good readability)
License History
- System-Generated GrantAug 1, 2026
- License IssuedAug 1, 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.