Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ6UL callsign genealogy
Currently held by Ma, Boyi
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 AJ6UL's current licensee, walking backwards.
- Ma, BoyiCAgranted 2021-10-29cancelled 2021-11-05
Successor callsigns
Callsigns held now by people who previously held AJ6UL.
- Ma, BoyiCAgranted 2021-12-21