Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4USD callsign genealogy
Currently held by Burke, Joseph
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 W4USD's current licensee, walking backwards.
- Burke, JosephMIgranted 2010-01-12cancelled 2010-02-12
Successor callsigns
Callsigns held now by people who previously held W4USD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4USD, oldest first.
- TODD, WILLIAM A FL1996-02-05 → cancelled 2008-02-06
- Burke, Joseph OH2019-12-04 active