Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI9S callsign genealogy
Currently held by Lange, Edward
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 AI9S's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AI9S.
- Giudici, ReinaldoCAgranted 2026-04-03
All historical holders
Every license row we've seen with the callsign AI9S, oldest first.
- Lange, Edward IL2004-06-14 → cancelled 2016-07-15
- Giudici, Reinaldo CA2016-08-02 → cancelled 2026-04-03