Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9TBZ callsign genealogy
Currently held by ANDERSON, FRED H
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 W9TBZ's current licensee, walking backwards.
- BAHR, THOMAS WWIgranted 2017-09-21cancelled 2022-01-25
Successor callsigns
Callsigns held now by people who previously held W9TBZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9TBZ, oldest first.
- ANDERSON, FRED H IL1996-02-21 → cancelled 2008-02-22
- Bahr, Thomas W WI2022-01-25 active