Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX9K callsign genealogy
Currently held by STEWART, THOMAS E
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 KX9K's current licensee, walking backwards.
- Frantz, Robert KILgranted 1999-05-10cancelled 2003-03-15
Successor callsigns
Callsigns held now by people who previously held KX9K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KX9K, oldest first.
- STEWART, THOMAS E IL1988-04-19 → cancelled 2000-04-20
- Frantz, Robert K IL2024-08-14 active