Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9IMS callsign genealogy
Currently held by Indianapolis Motor Speedway Amateur Radio Club
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 W9IMS's current licensee, walking backwards.
- KC9FPHcancelledIndianapolis Motor Speedway Amateur Radio ClubINgranted 2004-03-16cancelled 2004-04-10
Successor callsigns
Callsigns held now by people who previously held W9IMS.
No current licensee on record previously held this callsign.