Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO9M callsign genealogy
Currently held by LAWRENCE, FRANCIS 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 KO9M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO9M, oldest first.
- LAWRENCE, FRANCIS L IL2010-01-15 → cancelled 2022-02-10
- Marek, Filip NC2022-03-01 active