Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8SOB callsign genealogy
Currently held by COFFEY, THOMAS L
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 W8SOB's current licensee, walking backwards.
- Michel, JeffreyOHgranted 2016-05-26cancelled 2022-06-14
Successor callsigns
Callsigns held now by people who previously held W8SOB.
- COFFEY, THOMAS LOHgranted 2015-10-09cancelled 2016-05-28
All historical holders
Every license row we've seen with the callsign W8SOB, oldest first.
- BROEDER, FREDERICK B MI1996-03-22 → cancelled 2008-03-25
- COFFEY, THOMAS L OH2015-01-23 → cancelled 2015-10-09
- Michel, Jeffrey OH2022-06-14 active