Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1SDB callsign genealogy
Currently held by Brown, Stephan 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 N1SDB's current licensee, walking backwards.
- Brown, Stephan DCTgranted 2017-04-17cancelled 2018-02-27
Successor callsigns
Callsigns held now by people who previously held N1SDB.
- TROTT, TIMOTHY WMEgranted 1995-03-15cancelled 2004-05-13