Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8MDS callsign genealogy
Currently held by Settlage, Mark 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 W8MDS's current licensee, walking backwards.
- Settlage, Mark DOHgranted 2002-04-26cancelled 2009-03-27
Successor callsigns
Callsigns held now by people who previously held W8MDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8MDS, oldest first.
- MUHLEMAN, JOHN L OH1988-09-27 → cancelled 2000-09-28
- Settlage, Mark D OH2019-01-01 active