Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9TMD callsign genealogy
Currently held by Demeyer, Todd 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 K9TMD's current licensee, walking backwards.
- Duffy, Ted MUTgranted 2018-02-09cancelled 2018-03-02
Successor callsigns
Callsigns held now by people who previously held K9TMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9TMD, oldest first.
- Demeyer, Todd M IN2004-04-13 → cancelled 2016-04-14
- Duffy, Ted M UT2018-03-02 active