Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA9US callsign genealogy
Currently held by BOLINGBROOK AREA RADIO CONTESTERS
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 NA9US's current licensee, walking backwards.
- KB9YJKcancelledBOLINGBROOK AREA RADIO CONTESTERSILgranted 2000-11-16cancelled 2002-03-20
Successor callsigns
Callsigns held now by people who previously held NA9US.
No current licensee on record previously held this callsign.