Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WN4J callsign genealogy
Currently held by McKenzie, Justin M
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 WN4J's current licensee, walking backwards.
- McKenzie, Justin MARgranted 2017-05-24cancelled 2022-08-12
Successor callsigns
Callsigns held now by people who previously held WN4J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WN4J, oldest first.
- ABBEY, ROBERT L FL2010-04-30 → cancelled 2022-07-26
- McKenzie, Justin M AR2022-08-12 active