Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7DRZ callsign genealogy
Currently held by SIMMONSON, E DON
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 K7DRZ's current licensee, walking backwards.
- Davis, DavidORgranted 2018-03-26cancelled 2024-09-13
Successor callsigns
Callsigns held now by people who previously held K7DRZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7DRZ, oldest first.
- SIMMONSON, E DON WA1998-04-21 → cancelled 2010-04-22
- Davis, David T OR2024-09-13 active