Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KB4PDO
ActiveTHRONEBERRY, GRADY L
- Location
- LOUISVILLE, KY
- Class
- Technician
- Granted
- 2015-11-17
- Expires
- 2025-11-17
- Previous call
- WZ5S
- FRN
- 0011608759
Sign in to watch
Get notified about status changes and vanity availability for this callsign.
Vanity availability
HeldCurrently held
KB4PDO 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
- WILLIAMS, JOHN AARgranted 2021-06-18
License history
0 eventsNo recorded events.