Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4UJR callsign genealogy
Currently held by Kolehmainen, Mathias L
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 KI4UJR's current licensee, walking backwards.
- Kolehmainen, Mathias LKYgranted 2006-07-18cancelled 2007-03-19
Successor callsigns
Callsigns held now by people who previously held KI4UJR.
No current licensee on record previously held this callsign.