Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD6KZU callsign genealogy
Currently held by SINCLAIR, SETH A
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 KD6KZU's current licensee, walking backwards.
- Sinclair, Seth ACAgranted 2009-05-13cancelled 2009-06-02
Successor callsigns
Callsigns held now by people who previously held KD6KZU.
- Sinclair, Seth ACAgranted 2009-06-02cancelled 2009-06-30
All historical holders
Every license row we've seen with the callsign KD6KZU, oldest first.
- SINCLAIR, SETH A CA1992-06-23 → cancelled 2004-06-24
- Sinclair, Seth A CA2009-06-02 → cancelled 2009-06-11