Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ACT callsign genealogy
Currently held by WICHNER, WALTER T
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 W0ACT's current licensee, walking backwards.
- Sehrt, Steven AMOgranted 2012-12-04cancelled 2012-12-27
Successor callsigns
Callsigns held now by people who previously held W0ACT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0ACT, oldest first.
- WICHNER, WALTER T SD1991-02-19 → cancelled 2003-02-20
- Sehrt, Steven A MO2022-10-01 active