Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0MDT callsign genealogy
Currently held by DE VRIES, ROBERT G
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 K0MDT's current licensee, walking backwards.
- THOMAS, MICHAEL DCOgranted 2011-07-15cancelled 2021-02-06
Successor callsigns
Callsigns held now by people who previously held K0MDT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0MDT, oldest first.
- DE VRIES, ROBERT G CO2007-06-20 → cancelled 2019-06-21
- Thomas, Michael D FL2021-02-06 active