Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MDB callsign genealogy
Currently held by Bernier, Marcel D
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 W1MDB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1MDB.
- Bernier, Marcel DMEgranted 2008-05-24cancelled 2009-12-22
All historical holders
Every license row we've seen with the callsign W1MDB, oldest first.
- Bernier, Marcel D ME2005-06-03 → cancelled 2008-05-24
- Bernier, Marcel D FL2019-10-04 active