Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JBM callsign genealogy
Currently held by Matteson, Justin B
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 K0JBM's current licensee, walking backwards.
- Matteson, Justin BNDgranted 2019-05-06cancelled 2019-06-21
Successor callsigns
Callsigns held now by people who previously held K0JBM.
No current licensee on record previously held this callsign.