Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3PX callsign genealogy
Currently held by SMIRK, JAMES W
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 W3PX's current licensee, walking backwards.
- Feng, XianmingILgranted 2025-05-03cancelled 2025-05-23
Successor callsigns
Callsigns held now by people who previously held W3PX.
- ELLIS, FRANK AMDgranted 2023-05-02
All historical holders
Every license row we've seen with the callsign W3PX, oldest first.
- SMIRK, JAMES W DE2010-04-21 → cancelled 2018-01-12
- ELLIS, FRANK A MD2020-03-07 → cancelled 2023-05-02
- Feng, Xianming IL2025-05-23 active