Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4WXJ callsign genealogy
Currently held by Bertelson, James D
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 KN4WXJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KN4WXJ.
No current licensee on record previously held this callsign.