Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK7CJ callsign genealogy
Currently held by CLARK, WILLIAM
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 KK7CJ's current licensee, walking backwards.
- CLARK, WILLIAMWAgranted 2021-12-06cancelled 2022-02-19
Successor callsigns
Callsigns held now by people who previously held KK7CJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK7CJ, oldest first.
- DANNER, RUTH E WA2009-02-18 → cancelled 2021-04-27
- CLARK, WILLIAM WA2022-02-19 active