Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NB2X callsign genealogy
Currently held by NIERENBERG, IRVING
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 NB2X's current licensee, walking backwards.
- Schwan, StefanNJgranted 2022-08-05cancelled 2022-10-25
Successor callsigns
Callsigns held now by people who previously held NB2X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NB2X, oldest first.
- NIERENBERG, IRVING NJ2010-07-13 → cancelled 2022-09-07
- Schwan, Stefan NJ2022-10-25 active