Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0ZW callsign genealogy
Currently held by RIGHTLER, TODD C
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 AC0ZW's current licensee, walking backwards.
- RIGHTLER, TODD CCOgranted 2017-08-09cancelled 2026-04-24
Successor callsigns
Callsigns held now by people who previously held AC0ZW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AC0ZW, oldest first.
- Humphreys, Patrick A MN2012-04-13 → cancelled 2024-04-16
- RIGHTLER, TODD C CO2026-04-24 active