Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6DMX callsign genealogy
Currently held by KREIZINGER, RAYMOND F
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 K6DMX's current licensee, walking backwards.
- Findlay, JeffreyCAgranted 2020-01-21cancelled 2020-02-11
Successor callsigns
Callsigns held now by people who previously held K6DMX.
- Kolus, Derrick PCAgranted 2017-09-12
All historical holders
Every license row we've seen with the callsign K6DMX, oldest first.
- KREIZINGER, RAYMOND F AZ1993-02-23 → cancelled 2005-02-24
- Kolus, Derrick P CA2017-07-25 → cancelled 2017-09-12
- Findlay, Jeffrey CA2020-02-11 active