Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DMZ callsign genealogy
Currently held by KOERNER, ELLIOTT S
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 K4DMZ's current licensee, walking backwards.
- Rodriguez, Richard CFLgranted 2008-04-07cancelled 2008-05-23
Successor callsigns
Callsigns held now by people who previously held K4DMZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DMZ, oldest first.
- KOERNER, ELLIOTT S KY1994-05-24 → cancelled 2006-05-25
- Rodriguez, Richard C OR2018-03-06 active