Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4BFU callsign genealogy
Currently held by BECKER, JEFFERY M
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 KJ4BFU's current licensee, walking backwards.
- BECKER, JEFFERY MALgranted 2006-05-09cancelled 2007-12-26
Successor callsigns
Callsigns held now by people who previously held KJ4BFU.
- BECKER, JEFFERY MALgranted 2020-01-28