Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4MX callsign genealogy
Currently held by BIERLEY, WARREN M
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 KX4MX's current licensee, walking backwards.
- BIERLEY, WARREN MALgranted 2015-01-23cancelled 2018-08-21
Successor callsigns
Callsigns held now by people who previously held KX4MX.
No current licensee on record previously held this callsign.