Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC4CJ callsign genealogy
Currently held by Jack, James C
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 KC4CJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC4CJ.
No current licensee on record previously held this callsign.