Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4JDJ callsign genealogy
Currently held by Johnston, 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 W4JDJ's current licensee, walking backwards.
- Johnston JR, James DALgranted 2014-05-05cancelled 2022-04-30
Successor callsigns
Callsigns held now by people who previously held W4JDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JDJ, oldest first.
- Johnston, James D AL2018-02-01 → cancelled 2022-03-09
- Johnston JR, James D AL2022-04-30 active