Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4EU callsign genealogy
Currently held by RISTER, WINFORD M
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 KI4EU's current licensee, walking backwards.
- WB4MBLno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KI4EU.
- RISTER, WINFORD MFLgranted 2019-02-09