Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF9YI callsign genealogy
Currently held by KLUCZINSKE, MICHAEL J
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 KF9YI's current licensee, walking backwards.
- N9UFZno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF9YI.
- Kluczinske, Michael JWIgranted 2003-04-09cancelled 2015-07-07