Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1MD callsign genealogy
Currently held by LIGHTY, DUANE W
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 AC1MD's current licensee, walking backwards.
- Dooley, Mark NMAgranted 2024-12-05cancelled 2026-05-27
Successor callsigns
Callsigns held now by people who previously held AC1MD.
- LIGHTY, DUANE WNHgranted 2021-12-28
All historical holders
Every license row we've seen with the callsign AC1MD, oldest first.
- LIGHTY, DUANE W NH2014-11-11 → cancelled 2021-12-28
- Dooley, Mark N MA2026-05-27 active