Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9EDW callsign genealogy
Currently held by Watson, Edward 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 W9EDW's current licensee, walking backwards.
- HEINZE, MICHAEL GWIgranted 2012-09-17cancelled 2018-02-03
Successor callsigns
Callsigns held now by people who previously held W9EDW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9EDW, oldest first.
- Watson, Edward M WI2003-05-30 → cancelled 2015-06-02
- HEINZE, MICHAEL G WI2018-02-03 active