Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA4JDJ callsign genealogy
Currently held by JOHNSON, JAMES D
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 KA4JDJ's current licensee, walking backwards.
- Johnson, James DTNgranted 2006-12-12cancelled 2007-02-08
Successor callsigns
Callsigns held now by people who previously held KA4JDJ.
- JOHNSON, JAMES DTNgranted 2017-10-07