Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ1MBO callsign genealogy
Currently held by Sanchez, Jimi C
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 KJ1MBO's current licensee, walking backwards.
- Sanchez, Jimi CNCgranted 2022-12-10cancelled 2023-01-10
Successor callsigns
Callsigns held now by people who previously held KJ1MBO.
- Boardman, James HWAgranted 2020-06-16cancelled 2020-08-01
All historical holders
Every license row we've seen with the callsign KJ1MBO, oldest first.
- Boardman, James H WA2014-03-19 → cancelled 2020-06-16
- Sanchez, Jimi C NC2023-01-10 active