Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MAT callsign genealogy
Currently held by RUNYAN, MATTHEW 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 W4MAT's current licensee, walking backwards.
- RUNYAN, MATTHEW JCOgranted 2010-05-27cancelled 2011-05-27
Successor callsigns
Callsigns held now by people who previously held W4MAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MAT, oldest first.
- BEDFORD JR, SIDNEY M TX1999-05-03 → cancelled 2011-05-04
- RUNYAN, MATTHEW J MD2021-04-28 active