Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2OUM callsign genealogy
Currently held by Kolibas, Donald G
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 K2OUM's current licensee, walking backwards.
- Kolibas, Donald GCAgranted 2026-05-19cancelled 2026-07-07
Successor callsigns
Callsigns held now by people who previously held K2OUM.
No current licensee on record previously held this callsign.