Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4VO callsign genealogy
Currently held by Schumaker, Duane J
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 AI4VO's current licensee, walking backwards.
- Schumaker, Duane JTNgranted 2007-01-25cancelled 2007-03-20
Successor callsigns
Callsigns held now by people who previously held AI4VO.
No current licensee on record previously held this callsign.