Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AD1AO callsign genealogy
Currently held by Demastrie, Michael 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 AD1AO's current licensee, walking backwards.
- Demastrie, Michael ANHgranted 2018-11-27cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held AD1AO.
No current licensee on record previously held this callsign.