Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1XJ callsign genealogy
Currently held by ROBERT, WILLIAM 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 KB1XJ's current licensee, walking backwards.
- KA1KLYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KB1XJ.
- ROBERT, WILLIAM JAZgranted 2026-08-12