Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6DPI callsign genealogy
Currently held by Kim, Sungyong
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 W6DPI's current licensee, walking backwards.
- Kim, SungyongCAgranted 2016-05-03cancelled 2016-11-22
Successor callsigns
Callsigns held now by people who previously held W6DPI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6DPI, oldest first.
- DUNCAN, CECIL E CA2004-06-10 → cancelled 2016-09-09
- Kim, Sungyong CA2016-11-22 active