Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9DUI callsign genealogy
Currently held by Grimaldi, James G
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 N9DUI's current licensee, walking backwards.
- Grimaldi, James GILgranted 2014-11-25cancelled 2014-12-13
Successor callsigns
Callsigns held now by people who previously held N9DUI.
No current licensee on record previously held this callsign.