Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4UI callsign genealogy
Currently held by GLENN, ROBERT 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 AI4UI's current licensee, walking backwards.
- GLENN, ROBERT JFLgranted 2006-12-30cancelled 2007-03-06
Successor callsigns
Callsigns held now by people who previously held AI4UI.
No current licensee on record previously held this callsign.