Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6CDX callsign genealogy
Currently held by MATTHEWS, DUANE B
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 K6CDX's current licensee, walking backwards.
- MATTHEWS, DUANE BCAgranted 2016-07-14cancelled 2017-02-14
Successor callsigns
Callsigns held now by people who previously held K6CDX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6CDX, oldest first.
- Yancey, Merritt M CA2004-01-15 → cancelled 2016-04-13
- MATTHEWS, DUANE B CA2017-02-14 active