Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0TBW callsign genealogy
Currently held by White, Thomas B
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 K0TBW's current licensee, walking backwards.
- BOWMAN, RILEY TCOgranted 2024-08-02cancelled 2024-08-20
Successor callsigns
Callsigns held now by people who previously held K0TBW.
- White, Thomas BTXgranted 2018-12-27
All historical holders
Every license row we've seen with the callsign K0TBW, oldest first.
- White, Thomas B TX2010-07-13 → cancelled 2018-12-27
- Bowman, Riley T CO2024-08-20 active