Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC6CHS callsign genealogy
Currently held by TRENADO, RANDY P
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 KC6CHS's current licensee, walking backwards.
- KI6JIVcancelledCalabasas High SchoolCAgranted 2007-04-30cancelled 2007-05-18
Successor callsigns
Callsigns held now by people who previously held KC6CHS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC6CHS, oldest first.
- TRENADO, RANDY P CA1989-03-21 → cancelled 2001-03-22
- Calabasas High School CA2017-03-07 active