Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6TAC callsign genealogy
Currently held by Fumoto, Thomas M
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 K6TAC's current licensee, walking backwards.
- Fumoto, Thomas MCAgranted 2023-12-13cancelled 2025-01-31
Successor callsigns
Callsigns held now by people who previously held K6TAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6TAC, oldest first.
- Maxwell, Ross G CA2011-07-16 → cancelled 2023-07-18
- Fumoto, Thomas M CA2025-01-31 active