Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WZ3D callsign genealogy
Currently held by Patton, David C
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 WZ3D's current licensee, walking backwards.
- Patton, David CMDgranted 2021-05-03cancelled 2024-05-24
Successor callsigns
Callsigns held now by people who previously held WZ3D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WZ3D, oldest first.
- SCHAAR, JOHN D PA2012-02-23 → cancelled 2024-05-07
- Patton, David C MD2024-05-24 active