Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0TKS callsign genealogy
Currently held by KALMAN, IVAN
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 K0TKS's current licensee, walking backwards.
- Strine, ThomasMNgranted 2023-04-14cancelled 2023-05-05
Successor callsigns
Callsigns held now by people who previously held K0TKS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0TKS, oldest first.
- KALMAN, IVAN MN2004-03-10 → cancelled 2016-06-01
- Strine, Thomas K MN2023-05-05 active