Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3DFZ callsign genealogy
Currently held by Burke, Michael J
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 W3DFZ's current licensee, walking backwards.
- Burke, Michael JPAgranted 2011-03-09cancelled 2011-04-01
Successor callsigns
Callsigns held now by people who previously held W3DFZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3DFZ, oldest first.
- Burke, John W PA2006-03-24 → cancelled 2009-04-24
- Burke, Michael J PA2021-02-02 active