Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS0STM callsign genealogy
Currently held by OLSON, STEVEN M
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 KS0STM's current licensee, walking backwards.
- OLSON, STEVEN MKSgranted 2015-11-18cancelled 2015-12-11
Successor callsigns
Callsigns held now by people who previously held KS0STM.
No current licensee on record previously held this callsign.