Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4JNS callsign genealogy
Currently held by Evans, Jeffrey A
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 KO4JNS's current licensee, walking backwards.
- EVANS, JEFFREY ATNgranted 2019-11-18cancelled 2020-01-18
Successor callsigns
Callsigns held now by people who previously held KO4JNS.
- Evans, Jeffrey ATNgranted 2023-05-23