Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9DMX callsign genealogy
Currently held by RYAN, ROGER P
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 K9DMX's current licensee, walking backwards.
- Corliss Jr, Douglas JINgranted 2020-10-19cancelled 2020-11-06
Successor callsigns
Callsigns held now by people who previously held K9DMX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9DMX, oldest first.
- RYAN, ROGER P IN1988-03-29 → cancelled 2000-03-30
- Corliss Jr, Douglas J FL2020-11-06 active