Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MJK callsign genealogy
Currently held by KOVACK JR, 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 K4MJK's current licensee, walking backwards.
- KOVACK JR, MICHAEL JGAgranted 1997-10-23cancelled 2000-08-22
Successor callsigns
Callsigns held now by people who previously held K4MJK.
- BEECHER, ROBERT JFLgranted 2016-04-07