Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6TBD callsign genealogy
Currently held by BUHLMAN, WILLIAM 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 N6TBD's current licensee, walking backwards.
- BUHLMAN, WILLIAM HCAgranted 2025-04-02cancelled 2025-12-12
Successor callsigns
Callsigns held now by people who previously held N6TBD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6TBD, oldest first.
- TERRANOVA HUFFMAN, MARK J WA2007-06-27 → cancelled 2019-08-27
- BUHLMAN, WILLIAM H CA2025-12-12 active