Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WW1XX callsign genealogy
Currently held by SHAPIRO, ADAM D
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 WW1XX's current licensee, walking backwards.
- Skalski Jr, JamesNJgranted 2022-06-04cancelled 2025-09-20
Successor callsigns
Callsigns held now by people who previously held WW1XX.
- SHAPIRO, ADAM DCAgranted 2023-07-25
All historical holders
Every license row we've seen with the callsign WW1XX, oldest first.
- SHAPIRO, ADAM D CA2021-12-28 → cancelled 2023-07-25
- Skalski Jr, James NJ2025-09-20 active