Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9BYZ callsign genealogy
Currently held by GLASS, JEFFERY E
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 W9BYZ's current licensee, walking backwards.
- GLASS, JEFFERY EILgranted 2017-10-28cancelled 2026-01-03
Successor callsigns
Callsigns held now by people who previously held W9BYZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BYZ, oldest first.
- CRAWFORD, LOVELL B IL1987-11-03 → cancelled 1999-11-04
- GLASS, JEFFERY E IL2026-01-03 active