Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4CJ callsign genealogy
Currently held by JOHNSON, CHAD
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 W4CJ's current licensee, walking backwards.
- BROWN, KIRK MFLgranted 2015-03-02cancelled 2016-07-23
Successor callsigns
Callsigns held now by people who previously held W4CJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4CJ, oldest first.
- JOHNSON, CHAD TN2006-12-16 → cancelled 2014-07-03
- Brown, Kirk M FL2026-06-27 active