Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0LY callsign genealogy
Currently held by OLSON, DAVID H
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 K0LY's current licensee, walking backwards.
- DePew, Ronald BMOgranted 2014-04-22cancelled 2019-02-02
Successor callsigns
Callsigns held now by people who previously held K0LY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0LY, oldest first.
- OLSON, DAVID H MN2006-09-21 → cancelled 2018-12-19
- DePew, Ronald B MO2019-02-02 active