Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7CHS callsign genealogy
Currently held by COOPER, RICK 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 K7CHS's current licensee, walking backwards.
- Doyle, Chris AWAgranted 2020-02-20cancelled 2020-03-10
Successor callsigns
Callsigns held now by people who previously held K7CHS.
- COOPER, RICK LAZgranted 2026-04-11
All historical holders
Every license row we've seen with the callsign K7CHS, oldest first.
- COOPER, RICK L AZ2011-02-19 → cancelled 2016-05-07
- Doyle, Chris A WA2020-03-10 active