Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4CB callsign genealogy
Currently held by King, Donald L
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 AJ4CB's current licensee, walking backwards.
- King, Donald LKYgranted 1998-06-05cancelled 2007-09-18
Successor callsigns
Callsigns held now by people who previously held AJ4CB.
- King, Donald LKYgranted 2017-08-09