Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0LBJ callsign genealogy
Currently held by Delaney, Matthew C
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 K0LBJ's current licensee, walking backwards.
- Delaney, Matthew CCAgranted 2023-11-08cancelled 2023-12-08
Successor callsigns
Callsigns held now by people who previously held K0LBJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0LBJ, oldest first.
- MESSICK, ERNEST M IA1997-07-28 → cancelled 2009-07-29
- Delaney, Matthew C CA2023-12-08 active