Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6LBJ callsign genealogy
Currently held by Matlage, Karl 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 K6LBJ's current licensee, walking backwards.
- Matlage, Karl MCAgranted 2019-01-30cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held K6LBJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6LBJ, oldest first.
- FISH JR, EDWARD B CA1998-01-23 → cancelled 2010-01-26
- Matlage, Karl M CA2019-02-20 active