KC4CWS
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderRIVERON, MARIO O
License ClassNovice
Min. Class RequiredTechnician
LocationMIAMI, FL
Grant DateAug 22, 1997
Expiration DateAug 22, 2007
Cancellation DateAug 25, 2009
Available for ApplicationsAug 23, 2009
KC4CWS is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by RIVERON, MARIO O in MIAMI, FL. 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 Stewart, Charles W on Jun 15, 2026. KC4CWS has 1 recorded FCC license history event.
CW & Voice Analysis
Morse Code
-.- -.-. ....- -.-. .-- ...
CW Weight: 40 units(Moderate)
Voice Phonetics
Kilo Charlie Four Charlie Whiskey Sierra
Readability: 7/10(Good readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License ExpiredAug 25, 2009
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Stewart, Charles WFiled Jun 15, 2026Not awardedFCC ↗