Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1UM callsign genealogy
Currently held by Beaudry, Donald G
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 AB1UM's current licensee, walking backwards.
- Beaudry, Donald GMAgranted 2013-10-21cancelled 2013-10-23
Successor callsigns
Callsigns held now by people who previously held AB1UM.
- Beaudry, DonaldMEgranted 2023-10-03