Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO6MCJ callsign genealogy
Currently held by KOSKO, MICHAEL W
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 KO6MCJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO6MCJ.
No current licensee on record previously held this callsign.