KF0ESR
Active2x3District 0
No competing applications on record.
License HolderLesley, Steven S
License ClassTechnician
Min. Class RequiredTechnician
LocationSan Mateo, CA
Grant DateMar 22, 2021
Expiration DateMar 22, 2031
KF0ESR is a 2x3 format amateur radio callsign. It is currently registered to Lesley, Steven S in San Mateo, 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 Foxtrot Zero Echo Sierra Romeo
Readability: 6/10(Good readability)
License History
- Administrative Update AppliedJul 23, 2025
- System-Generated GrantMar 22, 2021
- License IssuedMar 22, 2021
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.