Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4FMK callsign genealogy
Currently held by KAISER 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 KM4FMK's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4FMK.
- KAISER JR, MICHAEL JFLgranted 2025-03-05