Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC6DU callsign genealogy
Currently held by W6PinoyDX Group
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 AC6DU's current licensee, walking backwards.
- KN6FWKcancelledW6PinoyDX GroupCAgranted 2019-11-20cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held AC6DU.
- W6GDXcancelledW6PinoyDX GroupCAgranted 2020-02-19cancelled 2022-04-29
All historical holders
Every license row we've seen with the callsign AC6DU, oldest first.
- RILEY JR, WILLARD CA1994-08-06 → cancelled 2003-12-11
- W6PinoyDX Group CA2019-12-10 → cancelled 2020-02-19