Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8TBZ callsign genealogy
Currently held by Zimmer, Timothy 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 W8TBZ's current licensee, walking backwards.
- Zimmer, Timothy BMIgranted 2006-09-19cancelled 2007-12-27
Successor callsigns
Callsigns held now by people who previously held W8TBZ.
No current licensee on record previously held this callsign.