Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4MDU callsign genealogy
Currently held by Burkhart, Thomas 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 KI4MDU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KI4MDU.
- Burkhart, Thomas HLAgranted 2015-08-27cancelled 2016-02-12