Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ACH callsign genealogy
Currently held by LI, YIKUAN
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 K0ACH's current licensee, walking backwards.
- LI, YIKUANILgranted 2024-01-10cancelled 2024-04-19
Successor callsigns
Callsigns held now by people who previously held K0ACH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ACH, oldest first.
- FRANKLIN, HENRY L OK2012-02-11 → cancelled 2024-02-29
- LI, YIKUAN IL2024-04-19 active