Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6TRD callsign genealogy
Currently held by SORIA, LIBRADO E
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 K6TRD's current licensee, walking backwards.
- MARTINEZ JR, FRANK JCAgranted 2018-01-31cancelled 2018-03-06
Successor callsigns
Callsigns held now by people who previously held K6TRD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6TRD, oldest first.
- SORIA, LIBRADO E CA2006-01-07 → cancelled 2018-01-09
- MARTINEZ JR, FRANK J CA2018-03-06 active