Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI9OW callsign genealogy
Currently held by Sergeev, Ivan A
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 AI9OW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AI9OW.
No current licensee on record previously held this callsign.