Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9DMS callsign genealogy
Currently held by Hewitt, Jeffrey M
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 K9DMS's current licensee, walking backwards.
- Hewitt, Jeffrey MCOgranted 2024-06-18cancelled 2024-07-09
Successor callsigns
Callsigns held now by people who previously held K9DMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9DMS, oldest first.
- Speer, David M AZ2011-03-05 → cancelled 2023-05-31
- Hewitt, Jeffrey M CO2024-07-09 active