Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3CHO callsign genealogy
Currently held by Cho, Kyung Min
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 K3CHO's current licensee, walking backwards.
- KF8ACUcancelledECHO Radio AmateursMIgranted 2024-02-07cancelled 2024-02-27
Successor callsigns
Callsigns held now by people who previously held K3CHO.
- Cho, Kyung MinILgranted 2020-04-04
All historical holders
Every license row we've seen with the callsign K3CHO, oldest first.
- Cho, Kyung Min IL2018-09-08 → cancelled 2020-04-04
- ECHO Radio Amateurs MI2024-02-27 active