Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0JBM callsign genealogy
Currently held by THORSON, JAMES 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 W0JBM's current licensee, walking backwards.
- Muegge, James BNEgranted 2012-06-05cancelled 2012-06-30
Successor callsigns
Callsigns held now by people who previously held W0JBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0JBM, oldest first.
- THORSON, JAMES B ND1987-10-13 → cancelled 1999-10-14
- Muegge, James B NE2022-09-27 active