Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1LM callsign genealogy
Currently held by Brennan, Michael J
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 AC1LM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AC1LM.
No current licensee on record previously held this callsign.