Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB0USA callsign genealogy
Currently held by RICHTER, JACKSON R
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 WB0USA's current licensee, walking backwards.
- RICHTER, JACKSON RIAgranted 2008-12-16cancelled 2015-05-27
Successor callsigns
Callsigns held now by people who previously held WB0USA.
- Thoreson, Tony DMNgranted 2026-06-16
All historical holders
Every license row we've seen with the callsign WB0USA, oldest first.
- Thoreson, Tony D MN2002-10-12 → cancelled 2006-08-19
- RICHTER, JACKSON R IA2025-04-11 active