Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6TBW callsign genealogy
Currently held by HARING, DONALD R
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 W6TBW's current licensee, walking backwards.
- WILLIAMS, THOMAS BCAgranted 2007-03-30cancelled 2009-10-03
Successor callsigns
Callsigns held now by people who previously held W6TBW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6TBW, oldest first.
- HARING, DONALD R CA1997-07-18 → cancelled 2009-07-21
- WILLIAMS, THOMAS B CA2019-09-17 active