Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9BI callsign genealogy
Currently held by HERRMANN, ROBERT C
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 N9BI's current licensee, walking backwards.
- Alvarez Sancho, BorisTNgranted 2024-09-24cancelled 2025-12-12
Successor callsigns
Callsigns held now by people who previously held N9BI.
All historical holders
Every license row we've seen with the callsign N9BI, oldest first.
- HERRMANN, ROBERT C IL2009-03-20 → cancelled 2021-06-16
- Kuzawa, Brian J AZ2021-07-07 → cancelled 2021-08-23
- NIEHAUS, NICHOLAS T WI2023-09-12 → cancelled 2023-10-03
- Sancho, Boris TN2025-12-12 active