Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ6MZ callsign genealogy
Currently held by Szelazek, Michael G
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 KJ6MZ's current licensee, walking backwards.
- Szelazek, Michael GCAgranted 2009-07-15cancelled 2013-03-09
Successor callsigns
Callsigns held now by people who previously held KJ6MZ.
- MOUNTS, JAMES MAKgranted 2003-04-02cancelled 2003-04-04
All historical holders
Every license row we've seen with the callsign KJ6MZ, oldest first.
- Szelazek, Michael G CA2023-02-18 active
- —— → cancelled 1998-10-27