Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA3TZ callsign genealogy
Currently held by Zajdel, Tom 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 AA3TZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AA3TZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA3TZ, oldest first.
- Gawarecki, Robert F MD1992-11-10 → cancelled 2001-06-04
- Zajdel, Tom J PA2024-05-24 active