Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MMD callsign genealogy
Currently held by DUNN, MATTHEW M
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 W4MMD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4MMD.
- W5MMDexpiredROCK ISLAND ARCTXgranted 1998-09-02cancelled 2010-09-03
All historical holders
Every license row we've seen with the callsign W4MMD, oldest first.
- DUNN, MATTHEW M VA2018-04-26 active
- BUSICK, DONALD P— → cancelled 1998-09-02