Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4JCU callsign genealogy
Currently held by Simpson, John W
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 KN4JCU'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 KN4JCU.
- Simpson, John WKYgranted 2018-02-13