Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MZ callsign genealogy
Currently held by Naegele, Robert A
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 W9MZ's current licensee, walking backwards.
- Naegele, Robert AWIgranted 1998-02-06cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held W9MZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MZ, oldest first.
- MC CLINTOCK, WILLIAM M IN1994-11-04 → cancelled 2001-01-10
- Naegele, Robert A IL2025-12-03 active