Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0TR callsign genealogy
Currently held by Byler, Stanley H
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 AC0TR's current licensee, walking backwards.
- RINK, TIMOTHY PCOgranted 2019-05-23cancelled 2019-06-11
Successor callsigns
Callsigns held now by people who previously held AC0TR.
- Byler, Stanley HNMgranted 2020-09-01
All historical holders
Every license row we've seen with the callsign AC0TR, oldest first.
- Byler, Stanley H CO2010-08-18 → cancelled 2010-11-05
- RINK, TIMOTHY P CO2019-06-11 active