WC0OS
Available2x2District 0
Competitive callsign — 2 applications filed with the FCC.
License HolderOSORIO, CARLOS
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationThornton, CO
Grant DateOct 24, 2013
Expiration DateMar 5, 2024
Cancellation DateMar 6, 2026
Available for ApplicationsMar 6, 2026
WC0OS is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by OSORIO, CARLOS in Thornton, CO. 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 OSORIO, CARLOS on Oct 29, 2003. WC0OS has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- -.-. ----- --- ...
CW Weight: 42 units(Heavy (slower to send))
Voice Phonetics
Whiskey Charlie Zero Oscar Sierra
Readability: 7/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredMar 6, 2026
- License RenewedOct 24, 2013
- License IssuedNov 18, 2003
- Vanity Callsign GrantedNov 18, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.