Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9NBC callsign genealogy
Currently held by MARQUARDT, HERMAN D
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 KA9NBC's current licensee, walking backwards.
- VAN SANT, CHARLES DINgranted 2022-02-02cancelled 2026-09-01
- WEST, KENNETH WFLgranted 2024-07-30cancelled 2024-11-15
- Perschau Jr, Robert CNCgranted 2026-08-18
- Perschau Jr, Robert CNCgranted 2021-06-23cancelled 2026-08-18
- Perschau Jr, Robert CILgranted 2000-06-23cancelled 2000-07-14
Successor callsigns
Callsigns held now by people who previously held KA9NBC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9NBC, oldest first.
- MARQUARDT, HERMAN D IL1996-06-14 → cancelled 2008-06-17
- VAN SANT, CHARLES D IN2026-09-01 active