Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AG4IR callsign genealogy
Currently held by Fredrickson, James E
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 AG4IR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AG4IR.
No current licensee on record previously held this callsign.