Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CSJ callsign genealogy
Currently held by Johnson, Chadwick S
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 N4CSJ's current licensee, walking backwards.
- Johnson, Chadwick SVAgranted 2007-03-29cancelled 2007-04-20
Successor callsigns
Callsigns held now by people who previously held N4CSJ.
No current licensee on record previously held this callsign.