Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AG1M callsign genealogy
Currently held by SHIRE, DOUGLAS B
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 AG1M's current licensee, walking backwards.
- Barry, John FMAgranted 2025-01-15cancelled 2026-02-24
Successor callsigns
Callsigns held now by people who previously held AG1M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AG1M, oldest first.
- SHIRE, DOUGLAS B CA1994-06-16 → cancelled 2006-06-17
- Mildenberger, Edmund J CO2016-10-05 → cancelled 2024-02-05
- Barry, John F MA2026-02-24 active