Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4DU callsign genealogy
Currently held by BOSSERT, RAYMOND 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 AI4DU's current licensee, walking backwards.
- Bossert, Raymond ANCgranted 2003-11-14cancelled 2004-01-21
Successor callsigns
Callsigns held now by people who previously held AI4DU.
No current licensee on record previously held this callsign.