Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KQ4QZJ callsign genealogy
Currently held by PARK, KYUNGCHAN J
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 KQ4QZJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KQ4QZJ.
- PARK, KYUNGCHAN JVAgranted 2024-04-11cancelled 2025-01-24