Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0FSJ callsign genealogy
Currently held by SHIMNIOK, MICHAEL E
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 K0FSJ's current licensee, walking backwards.
- SHIMNIOK, MICHAEL ECOgranted 1998-11-09cancelled 2003-12-19
Successor callsigns
Callsigns held now by people who previously held K0FSJ.
No current licensee on record previously held this callsign.