Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4OU callsign genealogy
Currently held by Stauffer, Arthur R
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 AI4OU's current licensee, walking backwards.
- Stauffer, Arthur RTNgranted 2003-12-15cancelled 2006-03-22
Successor callsigns
Callsigns held now by people who previously held AI4OU.
No current licensee on record previously held this callsign.