Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF4Z callsign genealogy
Currently held by STEVENS, JUDITH 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 WF4Z's current licensee, walking backwards.
- OConnor, John PGAgranted 2008-03-18cancelled 2009-06-09
Successor callsigns
Callsigns held now by people who previously held WF4Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WF4Z, oldest first.
- STEVENS, JUDITH M FL1997-05-19 → cancelled 2009-05-20
- OConnor, John P GA2019-05-21 active