Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB1CJJ callsign genealogy
Currently held by Margeson Jr, Donald R
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 KB1CJJ's current licensee, walking backwards.
- WB7WCJcancelledcancelled 1998-02-06
Successor callsigns
Callsigns held now by people who previously held KB1CJJ.
- Margeson Jr, Donald RORgranted 2025-05-20