Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9DXO callsign genealogy
Currently held by KONRAD, RICHARD 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 K9DXO's current licensee, walking backwards.
- BRUBAKER, ROBERT AILgranted 2011-07-22cancelled 2011-09-10
Successor callsigns
Callsigns held now by people who previously held K9DXO.
- KONRAD, RICHARD JWIgranted 1997-09-17cancelled 2000-08-25
All historical holders
Every license row we've seen with the callsign K9DXO, oldest first.
- BRUBAKER, ROBERT A IL2021-06-22 active
- KONRAD, RICHARD J— → cancelled 1997-09-17