KR4LFF
Active2x3District 4
No competing applications on record.
License HolderKUMAR, SUNIL P
License ClassAmateur Extra
Min. Class RequiredTechnician
LocationPortola Valley, CA
Grant DateApr 7, 2026
Expiration DateApr 7, 2036
KR4LFF is a 2x3 format amateur radio callsign. It is currently registered to KUMAR, SUNIL P in Portola Valley, 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: 37 units(Moderate)
Voice Phonetics
Kilo Romeo Four Lima Foxtrot Foxtrot
Readability: 7/10(Good readability)
License History
- System-Generated GrantApr 7, 2026
- License IssuedApr 7, 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.