Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2SIM callsign genealogy
Currently held by Shim, Juhyun
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 K2SIM's current licensee, walking backwards.
- Shim, JuhyunARgranted 2017-06-05cancelled 2018-07-10
Successor callsigns
Callsigns held now by people who previously held K2SIM.
No current licensee on record previously held this callsign.