Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9CSI callsign genealogy
Currently held by CENTROWITZ, DAVID
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 N9CSI's current licensee, walking backwards.
- CENTROWITZ, DAVIDFLgranted 2024-04-18cancelled 2024-09-13
Successor callsigns
Callsigns held now by people who previously held N9CSI.
No current licensee on record previously held this callsign.