Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5IRB callsign genealogy
Currently held by Johnson, Jason
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 KC5IRB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC5IRB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5IRB, oldest first.
- VAN LEER, LEON E OK1994-07-20 → cancelled 2006-07-21
- Johnson, Jason LA2024-09-06 active