Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0CMG callsign genealogy
Currently held by YOSINSKI, JASON 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 KC0CMG's current licensee, walking backwards.
- Yosinski, JasonCAgranted 2018-10-02cancelled 2018-10-27
Successor callsigns
Callsigns held now by people who previously held KC0CMG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0CMG, oldest first.
- YOSINSKI, JASON B CO1997-12-30 → cancelled 2009-12-31
- Yosinski, Jason CA2018-10-27 active