Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4JCX callsign genealogy
Currently held by Cook, Jonathan D
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 N4JCX's current licensee, walking backwards.
- Cook, Jonathan DALgranted 2021-01-12cancelled 2021-03-09
Successor callsigns
Callsigns held now by people who previously held N4JCX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4JCX, oldest first.
- AGOSTA, EMIL NC2007-10-30 → cancelled 2020-01-29
- Cook, Jonathan D AL2021-03-09 active