Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5YR callsign genealogy
Currently held by Chavero, Aurelio
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 AC5YR's current licensee, walking backwards.
- Chavero, AurelioTXgranted 2008-04-08cancelled 2009-04-03
Successor callsigns
Callsigns held now by people who previously held AC5YR.
- Callahan, William DTXgranted 2020-06-20
All historical holders
Every license row we've seen with the callsign AC5YR, oldest first.
- Callahan, William D TX1997-10-15 → cancelled 2000-09-12
- Chavero, Aurelio TX2019-02-19 active