KC9OTA
Available2x3District 9
Competitive callsign — 1 application filed with the FCC.
License HolderMason, John S
License ClassTechnician
Min. Class RequiredTechnician
LocationLake In The Hills, IL
Grant DateDec 1, 2008
Expiration DateDec 1, 2018
Cancellation DateDec 2, 2020
Available for ApplicationsDec 2, 2020
KC9OTA is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Mason, John S in Lake In The Hills, IL. 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 KLAUS, CASEY W on Dec 29, 2025. KC9OTA has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.-. ----. --- - .-
CW Weight: 44 units(Heavy (slower to send))
Voice Phonetics
Kilo Charlie Nine Oscar Tango Alpha
Readability: 7.5/10(High readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License ExpiredDec 2, 2020
- System-Generated GrantDec 1, 2008
- License IssuedDec 1, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- KLAUS, CASEY WFiled Dec 29, 2025Not awardedFCC ↗