Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF9CJ callsign genealogy
Currently held by BROOKS, DONALD J
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 KF9CJ's current licensee, walking backwards.
- KC6JDKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF9CJ.
- BROOKS, DONALD JMOgranted 2023-07-06