K0SFI
Active1x3District 0
Competitive callsign — 1 application filed with the FCC.
License HolderBranham, Bobby
License ClassGeneral
Min. Class RequiredGeneral
LocationRifle, CO
Grant DateApr 2, 2021
Expiration DateApr 2, 2031
K0SFI is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Branham, Bobby in Rifle, CO. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Branham, Bobby on Mar 15, 2021. K0SFI has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- ... ..-. ..
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Zero Sierra Foxtrot India
Readability: 6.5/10(Good readability)
License History
- License ModifiedJan 12, 2026
- License IssuedApr 2, 2021
- Vanity Callsign GrantedApr 2, 2021
- License ExpiredOct 6, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Branham, BobbyFiled Mar 15, 2021Not awardedFCC ↗