Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI8U callsign genealogy
Currently held by DE GROAT, JOHN 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 AI8U's current licensee, walking backwards.
- Cutlip, DuaneNCgranted 2021-02-08cancelled 2021-03-09
Successor callsigns
Callsigns held now by people who previously held AI8U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AI8U, oldest first.
- DE GROAT, JOHN A MI2011-06-22 → cancelled 2019-02-18
- Cutlip, Duane NC2021-03-09 active