Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1WJ callsign genealogy
Currently held by Pham, Hoan
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 AC1WJ's current licensee, walking backwards.
- Pham, HoanMAgranted 2026-04-02cancelled 2026-06-24
Successor callsigns
Callsigns held now by people who previously held AC1WJ.
No current licensee on record previously held this callsign.