Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NC4MM callsign genealogy
Currently held by MATZINGER, MICHAEL D
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 NC4MM's current licensee, walking backwards.
- MATZINGER, MICHAEL DNCgranted 1998-03-31cancelled 2002-09-21
Successor callsigns
Callsigns held now by people who previously held NC4MM.
No current licensee on record previously held this callsign.