Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0PPJ callsign genealogy
Currently held by MATUSZEWSKI, JAMES
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 W0PPJ's current licensee, walking backwards.
- HARRIS, ANNA MKSgranted 2018-02-05cancelled 2018-02-27
Successor callsigns
Callsigns held now by people who previously held W0PPJ.
- MATUSZEWSKI, JAMESAKgranted 2014-01-25cancelled 2026-04-21
All historical holders
Every license row we've seen with the callsign W0PPJ, oldest first.
- MATUSZEWSKI, JAMES AK1998-04-06 → cancelled 2004-04-20
- HARRIS, ANNA M KS2018-02-27 active