Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4JQ callsign genealogy
Currently held by Petrie, Stefanus 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 AI4JQ's current licensee, walking backwards.
- Petrie, Stefanus AFLgranted 2001-06-29cancelled 2005-03-21
Successor callsigns
Callsigns held now by people who previously held AI4JQ.
- Petrie, Stefanus ATXgranted 2015-01-22