Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4MSB callsign genealogy
Currently held by BYRD, MATTHEW S
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 KX4MSB's current licensee, walking backwards.
- Byrd, Matthew SNCgranted 2022-06-02cancelled 2022-06-22
Successor callsigns
Callsigns held now by people who previously held KX4MSB.
- BYRD, MATTHEW SNCgranted 2023-09-08