Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA4BJ callsign genealogy
Currently held by Johnston, Robert I
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 AA4BJ's current licensee, walking backwards.
- Johnston, Robert IFLgranted 2006-01-20cancelled 2006-08-11
Successor callsigns
Callsigns held now by people who previously held AA4BJ.
- DIAZ, ROBERT JFLgranted 2016-12-01