Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA1AZ callsign genealogy
Currently held by Risser-Milne, Christina M
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 AA1AZ's current licensee, walking backwards.
- Risser-Milne, Christina MCTgranted 2013-11-12cancelled 2015-05-12
Successor callsigns
Callsigns held now by people who previously held AA1AZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA1AZ, oldest first.
- DOBBING, THOMAS N RI1992-02-18 → cancelled 2004-02-19
- Risser-Milne, Christina M IN2025-03-19 active