Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4IO callsign genealogy
Currently held by Lombardi, Charles 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 AJ4IO's current licensee, walking backwards.
- Lombardi, Charles AFLgranted 2008-05-02cancelled 2008-05-21
Successor callsigns
Callsigns held now by people who previously held AJ4IO.
- LOMBARDI, CHARLES AFLgranted 2018-04-27