Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB0S callsign genealogy
Currently held by BOISE, JAMES W
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 WB0S's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WB0S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB0S, oldest first.
- BOISE, JAMES W IA1997-09-22 → cancelled 1998-09-09
- Sifford, Jack E MO2023-11-04 active