Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA8MDI callsign genealogy
Currently held by UTTERBACK, ROBERT J
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 WA8MDI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA8MDI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA8MDI, oldest first.
- UTTERBACK, ROBERT J MI1998-08-17 → cancelled 2010-08-18
- Browngoetz, Gregg L AZ2025-05-13 active