Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5S callsign genealogy
Currently held by MARSHALL JR, CHARLES E
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 AC5S's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AC5S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AC5S, oldest first.
- MARSHALL JR, CHARLES E TX1999-02-10 → cancelled 2009-11-05
- Brown, Paul L CO2019-09-05 active