Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD8DU callsign genealogy
Currently held by Matthews, Michael W
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 AD8DU's current licensee, walking backwards.
- Matthews, Michael WMIgranted 2011-08-31cancelled 2019-05-14
Successor callsigns
Callsigns held now by people who previously held AD8DU.
No current licensee on record previously held this callsign.