Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI0N callsign genealogy
Currently held by ENGBERG, CHARLES L
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 AI0N's current licensee, walking backwards.
- ENGBERG, CHARLES LNEgranted 1993-05-25cancelled 2000-06-23
Successor callsigns
Callsigns held now by people who previously held AI0N.
- MARTIN, HARLAN EWAgranted 1988-07-26cancelled 2000-07-27