Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0MLB callsign genealogy
Currently held by Petska, Michael L
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 KC0MLB's current licensee, walking backwards.
- WILBORN, MARKKSgranted 2022-06-24cancelled 2022-07-15
Successor callsigns
Callsigns held now by people who previously held KC0MLB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0MLB, oldest first.
- Petska, Michael L NE2001-12-11 → cancelled 2013-12-12
- WILBORN, MARK KS2022-07-15 active