Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM6TZS callsign genealogy
Currently held by Willmes, Russell 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 KM6TZS's current licensee, walking backwards.
- Willmes, Russell DCAgranted 2019-11-13cancelled 2020-11-24
Successor callsigns
Callsigns held now by people who previously held KM6TZS.
- Willmes, Russell DCAgranted 2019-11-13cancelled 2020-11-24
All historical holders
Every license row we've seen with the callsign KM6TZS, oldest first.
- Willmes, Russell D CA2018-06-14 → cancelled 2019-11-13
- Willmes, Russell D CA2020-11-24 active