Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3ZAT callsign genealogy
Currently held by Schwarz, Brian K
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 W3ZAT's current licensee, walking backwards.
- Schwarz, Brian KPAgranted 2021-06-22cancelled 2024-03-12
Successor callsigns
Callsigns held now by people who previously held W3ZAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3ZAT, oldest first.
- INGRAM, WILLIAM A S PA1995-12-07 → cancelled 1999-06-29
- Schwarz, Brian K PA2024-03-12 active