Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0LAK callsign genealogy
Currently held by Kasten, Robert B
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 K0LAK's current licensee, walking backwards.
- SANCHEZ, JEREMYCOgranted 2020-08-20cancelled 2020-09-09
Successor callsigns
Callsigns held now by people who previously held K0LAK.
- Kasten, Robert BMNgranted 2017-03-25
All historical holders
Every license row we've seen with the callsign K0LAK, oldest first.
- Kasten, Robert B MN2016-02-23 → cancelled 2017-03-25
- SANCHEZ, JEREMY CO2020-09-09 active