Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9PQD callsign genealogy
Currently held by Clayton, Ronald K
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 KC9PQD's current licensee, walking backwards.
- Clayton, Ronald KWIgranted 2023-01-06cancelled 2023-02-11
Successor callsigns
Callsigns held now by people who previously held KC9PQD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC9PQD, oldest first.
- Clayton, Ronald K WI2009-04-27 → cancelled 2021-04-28
- Clayton, Ronald K WI2023-02-11 active