Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6MMT callsign genealogy
Currently held by Mendes, Robert L
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 K6MMT's current licensee, walking backwards.
- Calvo Cuellar, RamiroCAgranted 2023-11-28cancelled 2026-01-17
Successor callsigns
Callsigns held now by people who previously held K6MMT.
- Mendes, Robert LAZgranted 2023-12-29
All historical holders
Every license row we've seen with the callsign K6MMT, oldest first.
- GOVORKO, PETE N WA1998-04-03 → cancelled 2008-06-20
- Mendes, Robert L AZ2021-12-10 → cancelled 2023-12-29
- Calvo Cuellar, Ramiro CA2026-01-17 active