K4BDU
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderAREVALO, SERGIO E
License ClassAdvanced
Min. Class RequiredGeneral
LocationPANORAMA CITY, CA
Grant DateApr 8, 2026
Expiration DateMay 24, 2036
K4BDU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by AREVALO, SERGIO E in PANORAMA CITY, CA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by St John, James R on May 4, 2016. K4BDU has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -... -.. ..-
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Four Bravo Delta Uniform
Readability: 7.5/10(High readability)
License History
- License RenewedApr 8, 2026
- Administrative Update AppliedJan 1, 2019
- License IssuedMay 24, 2016
- Vanity Callsign GrantedMay 24, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.