Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI7EX callsign genealogy
Currently held by MONTGOMERY, MARK 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 AI7EX's current licensee, walking backwards.
- Williams, Matthew AORgranted 2021-02-09cancelled 2024-01-09
Successor callsigns
Callsigns held now by people who previously held AI7EX.
- MONTGOMERY, MARK AORgranted 2021-02-12cancelled 2023-12-22
All historical holders
Every license row we've seen with the callsign AI7EX, oldest first.
- MONTGOMERY, MARK A OR2016-12-02 → cancelled 2021-02-12
- Williams, Matthew A OR2024-01-09 active