Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JBX callsign genealogy
Currently held by BROCK JR, RUSSELL E
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 K4JBX's current licensee, walking backwards.
- BROCK JR, RUSSELL EGAgranted 1996-07-09cancelled 2000-05-23
Successor callsigns
Callsigns held now by people who previously held K4JBX.
No current licensee on record previously held this callsign.