AI5C
Active2x1District 5
Competitive callsign — 5 applications filed with the FCC.
License HolderEISENBERG, BRETT
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationSAN FRANCISCO, CA
Grant DateAug 4, 2026
Expiration DateAug 2, 2036
AI5C is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by EISENBERG, BRETT in SAN FRANCISCO, CA. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by SARMIENTO JR, AUGUSTO on Apr 13, 2016. AI5C has 11 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.- .. ..... -.-.
CW Weight: 19 units(Ultra-light (very fast to send))
Voice Phonetics
Alpha India Five Charlie
Readability: 8/10(High readability)
License History
- License RenewedAug 4, 2026
- Administrative Update AppliedAug 3, 2016
- License RenewedAug 2, 2016
- Administrative Update AppliedSep 11, 2012
- Administrative Update AppliedMay 15, 2012
- Administrative Update AppliedJul 22, 2008
- Administrative Update AppliedJul 3, 2007
- Administrative Update AppliedApr 21, 2006
- Vanity Callsign GrantedApr 18, 2006
- License IssuedApr 18, 2006
- License ExpiredMar 30, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.