Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WX4O callsign genealogy
Currently held by Tidball, John D
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WX4O's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WX4O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WX4O, oldest first.
- Tidball, John D AL2012-06-07 → cancelled 2024-09-04
- Johnson, William L KY2024-09-21 active