Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9KGB callsign genealogy
Currently held by Red Cedar Repeater Association Inc
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 K9KGB's current licensee, walking backwards.
- KC9ESTcancelledRed Cedar Repeater Association IncWIgranted 2003-09-17cancelled 2003-10-21
Successor callsigns
Callsigns held now by people who previously held K9KGB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9KGB, oldest first.
- DUNCAN, WILLIAM R WI2002-02-16 → cancelled 2003-08-22
- Red Cedar Repeater Association Inc WI2023-10-21 active