Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN6JB callsign genealogy
Currently held by Breitbach, Jim
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 KN6JB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KN6JB.
- LONTKA, RICHARD ECAgranted 2019-12-13
All historical holders
Every license row we've seen with the callsign KN6JB, oldest first.
- LONTKA, RICHARD E CA1993-03-23 → cancelled 2000-02-22
- Breitbach, Jim CA2024-04-05 active