Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4OZ callsign genealogy
Currently held by Sharer, Donald E
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 AI4OZ's current licensee, walking backwards.
- Sharer, Donald ENCgranted 2005-12-07cancelled 2006-03-28
Successor callsigns
Callsigns held now by people who previously held AI4OZ.
No current licensee on record previously held this callsign.