Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4ZJI callsign genealogy
Currently held by Smith Jr, Calvin M
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 KN4ZJI's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KN4ZJI.
- Smith Jr, Calvin MKYgranted 2019-11-13