Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9IBM callsign genealogy
Currently held by REIBOLD, MICHAEL N
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 W9IBM's current licensee, walking backwards.
- REIBOLD, MICHAEL NORgranted 2008-03-04cancelled 2008-03-25
Successor callsigns
Callsigns held now by people who previously held W9IBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9IBM, oldest first.
- REIBOLD, THOMAS J WI1992-05-12 → cancelled 2004-05-13
- REIBOLD, MICHAEL N OR2018-02-16 active