Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4IR callsign genealogy
Currently held by Runner, Thomas 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 AI4IR's current licensee, walking backwards.
- Runner, Thomas AALgranted 1997-12-18cancelled 2005-01-19
Successor callsigns
Callsigns held now by people who previously held AI4IR.
No current licensee on record previously held this callsign.