Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4FJB callsign genealogy
Currently held by Cook, Jeff 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 N4FJB's current licensee, walking backwards.
- Cook, Jeff AALgranted 2022-01-14cancelled 2022-02-05
Successor callsigns
Callsigns held now by people who previously held N4FJB.
No current licensee on record previously held this callsign.