KO4YDO
Active2x3District 4
No competing applications on record.
License HolderVander Bloomen, Mark J
License ClassTechnician
Min. Class RequiredTechnician
LocationHuntsville, AL
Grant DateFeb 28, 2022
Expiration DateFeb 28, 2032
KO4YDO is a 2x3 format amateur radio callsign. It is currently registered to Vander Bloomen, Mark J in Huntsville, AL. 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: 47 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Yankee Delta Oscar
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedSep 27, 2025
- Administrative Update AppliedFeb 24, 2024
- Administrative Update AppliedFeb 24, 2024
- System-Generated GrantFeb 28, 2022
- License IssuedFeb 28, 2022
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.