Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB5TR callsign genealogy
Currently held by BROWNLEE, MICHAEL D
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 AB5TR's current licensee, walking backwards.
- Lucker, Dennis RILgranted 2019-04-30
Successor callsigns
Callsigns held now by people who previously held AB5TR.
All historical holders
Every license row we've seen with the callsign AB5TR, oldest first.
- BROWNLEE, MICHAEL D WA2004-04-13 → cancelled 2008-06-03
- Lucker, Dennis R IL2014-02-14 → cancelled 2019-04-30