Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1SBB callsign genealogy
Currently held by DAVIS, THOMAS F
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 N1SBB's current licensee, walking backwards.
- Biggs, StevenOKgranted 2016-06-08cancelled 2016-06-28
Successor callsigns
Callsigns held now by people who previously held N1SBB.
- DAVIS, THOMAS FCTgranted 2023-12-19
All historical holders
Every license row we've seen with the callsign N1SBB, oldest first.
- DAVIS, THOMAS F CT1994-06-21 → cancelled 2003-12-02
- Biggs, Steven OK2016-06-28 active