Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4ZMX callsign genealogy
Currently held by Jennings, William
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 KM4ZMX'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 KM4ZMX.
- Jennings 230, William FTNgranted 2017-01-10cancelled 2017-02-22