Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4S callsign genealogy
Currently held by WELSH, DONALD 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 WD4S's current licensee, walking backwards.
- WELSH, DONALD RGAgranted 1995-07-17cancelled 2000-01-21
Successor callsigns
Callsigns held now by people who previously held WD4S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4S, oldest first.
- BURKE JR, JOHN P FL1987-09-15 → cancelled 1999-09-16
- WELSH, DONALD R GA2019-12-04 active