Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4JB callsign genealogy
Currently held by BROWN, JIM F
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 KY4JB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KY4JB.
No current licensee on record previously held this callsign.