Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4DTM callsign genealogy
Currently held by Chavez, Isaiah
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 KM4DTM's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4DTM.
- Chavez, IsaiahFLgranted 2014-08-18cancelled 2026-08-20