Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4MJ callsign genealogy
Currently held by REDSTONE, CLARENCE W
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 KK4MJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KK4MJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4MJ, oldest first.
- REDSTONE, CLARENCE W FL1997-01-31 → cancelled 1999-06-06
- JUSTICE, MICHAEL H KY2019-02-23 active