Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9AX callsign genealogy
Currently held by Wolff, 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 AB9AX's current licensee, walking backwards.
- RUESCH, KYLE MWIgranted 2016-04-15cancelled 2017-07-21
Successor callsigns
Callsigns held now by people who previously held AB9AX.
- Wolff, Michael DFLgranted 2021-07-14
All historical holders
Every license row we've seen with the callsign AB9AX, oldest first.
- Wolff, Michael D VA2009-03-14 → cancelled 2011-09-30
- RUESCH, KYLE M WI2017-07-21 active