Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4AC callsign genealogy
Currently held by Dresden, Gregory P
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 AI4AC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AI4AC.
No current licensee on record previously held this callsign.