Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0STO callsign genealogy
Currently held by Olson, Shane T
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 K0STO's current licensee, walking backwards.
- Olson, Shane TMNgranted 2015-11-03cancelled 2015-11-28
Successor callsigns
Callsigns held now by people who previously held K0STO.
No current licensee on record previously held this callsign.