Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB4GM callsign genealogy
Currently held by KINSELLA, WILLIAM P
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 AB4GM's current licensee, walking backwards.
- MALHIOT, GARYSCgranted 2023-08-17cancelled 2025-09-13
Successor callsigns
Callsigns held now by people who previously held AB4GM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4GM, oldest first.
- KINSELLA, WILLIAM P VA1988-02-23 → cancelled 2000-02-24
- MALHIOT, GARY SC2025-09-13 active