Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DMT callsign genealogy
Currently held by Disaster Medical Team
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 K4DMT's current licensee, walking backwards.
- Chinn Jr, Gregory FFLgranted 2020-07-08cancelled 2020-08-18
Successor callsigns
Callsigns held now by people who previously held K4DMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DMT, oldest first.
- Disaster Medical Team SC2008-07-01 → cancelled 2020-07-02
- Chinn Jr, Gregory F FL2020-08-18 active