Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JAM callsign genealogy
Currently held by WILLIAMS, LESLIE 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 K4JAM's current licensee, walking backwards.
- JOYNER, MARSHALL DTNgranted 2002-03-19cancelled 2007-03-02
Successor callsigns
Callsigns held now by people who previously held K4JAM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JAM, oldest first.
- WILLIAMS, LESLIE W SC1995-02-08 → cancelled 2007-02-09
- JOYNER, MARSHALL D TN2016-12-28 active