Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MDD callsign genealogy
Currently held by VAN DEN HAAK, JOE
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 W9MDD's current licensee, walking backwards.
- Downs, Marc DILgranted 2020-03-18cancelled 2025-07-01
Successor callsigns
Callsigns held now by people who previously held W9MDD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MDD, oldest first.
- VAN DEN HAAK, JOE OR2012-09-17 → cancelled 2024-12-17
- Downs, Marc D IL2025-07-01 active