Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6AMT callsign genealogy
Currently held by SHAFFER, STUART S
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 N6AMT's current licensee, walking backwards.
- Chambers, John MCAgranted 2022-05-28cancelled 2022-06-18
Successor callsigns
Callsigns held now by people who previously held N6AMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6AMT, oldest first.
- SHAFFER, STUART S CA2008-02-08 → cancelled 2020-02-11
- CHAMBERS, JOHN M CA2022-06-18 active