Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR6S callsign genealogy
Currently held by OBERT, DONALD L
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 KR6S's current licensee, walking backwards.
- OBERT, Thomas LAZgranted 2016-04-12cancelled 2021-03-23
Successor callsigns
Callsigns held now by people who previously held KR6S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR6S, oldest first.
- OBERT, DONALD L CA2015-06-30 → cancelled 2020-10-23
- OBERT, Thomas L AZ2021-03-23 active