K6MEX
Active1x3District 6
Competitive callsign — 6 applications filed with the FCC.
License HolderCASTILLO, CESAR A
License ClassTechnician
Min. Class RequiredGeneral
LocationREDWOOD CITY, CA
Grant DateMay 7, 2019
Expiration DateJun 30, 2029
K6MEX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by CASTILLO, CESAR A in REDWOOD CITY, CA. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Bautista, Jose on Jun 8, 2023. K6MEX has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.... -- . -..-
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
Kilo Six Mike Echo X-ray
Readability: 8.5/10(High readability)
License History
- Administrative Update AppliedJan 29, 2026
- License RenewedMay 7, 2019
- License IssuedJun 30, 2009
- Vanity Callsign GrantedJun 30, 2009
- License CanceledJul 18, 2006
- Vanity Callsign GrantedDec 21, 2004
- License IssuedDec 21, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.