Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MDW callsign genealogy
Currently held by Watts, Michael 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 W4MDW's current licensee, walking backwards.
- Watts, Michael DTNgranted 2015-12-08cancelled 2016-01-05
Successor callsigns
Callsigns held now by people who previously held W4MDW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MDW, oldest first.
- WILKINSON, MICHAEL D FL2003-05-20 → cancelled 2015-05-21
- Watts, Michael D TN2016-01-05 active