Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB2AT callsign genealogy
Currently held by Timko, Jeffrey 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 AB2AT's current licensee, walking backwards.
- Timko, Jeffrey JNYgranted 2019-10-02cancelled 2020-07-24
Successor callsigns
Callsigns held now by people who previously held AB2AT.
- MADDEN, MICHAEL JNYgranted 2019-02-01
All historical holders
Every license row we've seen with the callsign AB2AT, oldest first.
- Timko, Jeffrey J NY2020-07-24 active
- MADDEN, MICHAEL J— → cancelled 1998-11-19