Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8MJK callsign genealogy
Currently held by Kasprzak, 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 K8MJK's current licensee, walking backwards.
- Kasprzak, Michael JMIgranted 2023-07-11cancelled 2024-07-19
Successor callsigns
Callsigns held now by people who previously held K8MJK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8MJK, oldest first.
- ELEGEERT, THOMAS F MI1997-08-22 → cancelled 2009-08-25
- Kasprzak, Michael J MI2024-07-19 active