Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9MN callsign genealogy
Currently held by Nienhuis II, Michael J
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 AC9MN's current licensee, walking backwards.
- Nienhuis II, Michael JWIgranted 2011-05-31cancelled 2014-12-30
Successor callsigns
Callsigns held now by people who previously held AC9MN.
No current licensee on record previously held this callsign.