Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9EXZ callsign genealogy
Currently held by Thereault, Jonathan B
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 W9EXZ's current licensee, walking backwards.
- Thereault, Jonathan BNMgranted 2015-10-14cancelled 2015-11-03
Successor callsigns
Callsigns held now by people who previously held W9EXZ.
- Thereault, Jonathan BVTgranted 2021-09-14
All historical holders
Every license row we've seen with the callsign W9EXZ, oldest first.
- WITTNER, IRWIN IL1992-06-16 → cancelled 2004-06-17
- Thereault, Jonathan B VT2015-11-03 → cancelled 2021-09-14