Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD7W callsign genealogy
Currently held by BUTTERFIELD JR, STEPHEN R
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 WD7W's current licensee, walking backwards.
- Madden, James AWAgranted 1999-09-21cancelled 2009-06-16
Successor callsigns
Callsigns held now by people who previously held WD7W.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD7W, oldest first.
- BUTTERFIELD JR, STEPHEN R OR1997-05-14 → cancelled 2009-05-15
- MADDEN, JAMES A OR2019-05-23 active