Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD9FZ callsign genealogy
Currently held by Niemeyer, MaryAnn
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 AD9FZ's current licensee, walking backwards.
- Niemeyer, MaryAnnILgranted 2024-11-14cancelled 2025-01-13
Successor callsigns
Callsigns held now by people who previously held AD9FZ.
No current licensee on record previously held this callsign.