KO4OSB
Cancelled2x3District 4
No competing applications on record.
License HolderStacey, Frederick J
License ClassGeneral
Min. Class RequiredTechnician
LocationWashington, VA
Grant DateMar 24, 2021
Cancellation DateSep 21, 2024
Available for ApplicationsSep 22, 2026
KO4OSB is a 2x3 format amateur radio callsign. It is currently registered to Stacey, Frederick J in Washington, VA. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
-.- --- ....- --- ... -...
CW Weight: 41 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Oscar Sierra Bravo
Readability: 7/10(Good readability)
Available Sep 22, 2026 (18 days remaining)
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledSep 21, 2024
- License ModifiedJun 25, 2024
- Administrative Update AppliedMar 26, 2021
- System-Generated GrantMar 24, 2021
- License IssuedMar 24, 2021
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.