Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9ZYX callsign genealogy
Currently held by Stum, Matt
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 W9ZYX's current licensee, walking backwards.
- Stum, MattINgranted 2022-01-12cancelled 2022-02-05
Successor callsigns
Callsigns held now by people who previously held W9ZYX.
No current licensee on record previously held this callsign.