Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4UGR callsign genealogy
Currently held by Hadder, Michael 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 KI4UGR'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 KI4UGR.
- Hadder Mr, Michael GALgranted 2007-04-03cancelled 2019-04-04