Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KY4OS
ActiveAlcaraz, Mario N
- Location
- Lexington, KY
- Class
- Amateur Extra
- Granted
- 2021-03-16
- Expires
- 2031-05-27
- Previous call
- AK4IU
- FRN
- 0020895702
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Vanity availability
HeldCurrently held
KY4OS is held by an active license; it isn't a vanity slot right now.
Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).
Callsign genealogy
Full chain →Previously held by current licensee
- Alcaraz, Mario NKYgranted 2021-03-16cancelled 2022-04-21
License history
0 eventsNo recorded events.