Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0SX callsign genealogy
Currently held by BIRD, BRIAN A
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 N0SX's current licensee, walking backwards.
- Campbell, Christopher AGAgranted 2017-11-09cancelled 2024-07-12
Successor callsigns
Callsigns held now by people who previously held N0SX.
- BIRD, BRIAN AMNgranted 2019-10-11
All historical holders
Every license row we've seen with the callsign N0SX, oldest first.
- BIRD, BRIAN A MN1998-12-22 → cancelled 1999-12-28
- Lemke Jr, Thomas P IA2012-05-11 → cancelled 2024-06-25
- Campbell, Christopher A GA2024-07-12 active