Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0OLG callsign genealogy
Currently held by MC FETERS, JOHN J
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 K0OLG's current licensee, walking backwards.
- Hall, Timothy JMNgranted 2017-07-10cancelled 2018-09-18
Successor callsigns
Callsigns held now by people who previously held K0OLG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0OLG, oldest first.
- MC FETERS, JOHN J MN2004-02-19 → cancelled 2016-05-18
- Hall, Timothy J MN2018-09-18 active