Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD1XB callsign genealogy
Currently held by Gromczynski, Wojciech
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 AD1XB's current licensee, walking backwards.
- Gromczynski, WojciechWAgranted 2017-09-25cancelled 2017-10-28
Successor callsigns
Callsigns held now by people who previously held AD1XB.
- Gromczynski, WojciechWAgranted 2017-11-28