Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4FM callsign genealogy
Currently held by Matthews, William 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 KX4FM's current licensee, walking backwards.
- Matthews, William MFLgranted 2017-08-11cancelled 2017-08-28
Successor callsigns
Callsigns held now by people who previously held KX4FM.
- Matthews, William MFLgranted 2017-09-15