Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SBJ callsign genealogy
Currently held by Kusel, Jeremiah J
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 K4SBJ's current licensee, walking backwards.
- Kusel, Jeremiah JIAgranted 2019-07-09cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held K4SBJ.
No current licensee on record previously held this callsign.