Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ6MAC callsign genealogy
Currently held by Richmond-Darbey, Tobias
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 KJ6MAC's current licensee, walking backwards.
- MCDONALD, JAMESCAgranted 2024-06-07cancelled 2025-05-10
Successor callsigns
Callsigns held now by people who previously held KJ6MAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ6MAC, oldest first.
- Richmond-Darbey, Tobias CA2010-12-29 → cancelled 2022-12-30
- MCDONALD, JAMES CA2025-05-10 active