Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0PX callsign genealogy
Currently held by Williamson, John A
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 AC0PX's current licensee, walking backwards.
- Williamson, John AMOgranted 2008-10-24cancelled 2009-08-21
Successor callsigns
Callsigns held now by people who previously held AC0PX.
No current licensee on record previously held this callsign.