Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8MUD callsign genealogy
Currently held by HILMERT, WILLIAM K
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 W8MUD's current licensee, walking backwards.
- Perkins, Samuel DMOgranted 2018-12-11cancelled 2018-12-29
Successor callsigns
Callsigns held now by people who previously held W8MUD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8MUD, oldest first.
- HILMERT, WILLIAM K MI2004-04-13 → cancelled 2016-04-14
- Perkins, Samuel D MO2018-12-29 active