Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0BHX callsign genealogy
Currently held by VAN VALKENBURG, MARY R
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 K0BHX's current licensee, walking backwards.
- Hardin, Robert WCOgranted 2026-03-25cancelled 2026-05-02
Successor callsigns
Callsigns held now by people who previously held K0BHX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0BHX, oldest first.
- VAN VALKENBURG, MARY R IA1998-10-26 → cancelled 2010-10-27
- Hardin, Robert W CO2026-05-02 active