Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9NBC callsign genealogy
Currently held by KNOFF, KENNETH L
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 N9NBC's current licensee, walking backwards.
- Falkenstern, Andrew IWIgranted 2013-10-17cancelled 2013-11-19
Successor callsigns
Callsigns held now by people who previously held N9NBC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9NBC, oldest first.
- KNOFF, KENNETH L WI2001-10-30 → cancelled 2013-11-05
- Falkenstern, Andrew I WI2023-09-12 active