Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4UG callsign genealogy
Currently held by KILLIAN, MICHAEL F
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 AA4UG's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AA4UG.
- KILLIAN, MICHAEL FTNgranted 2009-04-04cancelled 2021-04-06