Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4SA callsign genealogy
Currently held by IGO, MICHAEL S
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 AI4SA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AI4SA.
- IGO, MICHAEL SKYgranted 2013-07-26cancelled 2020-03-24