Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9SIR callsign genealogy
Currently held by SOUTHERN INDIANA RADIO
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 W9SIR's current licensee, walking backwards.
- KD9BCZcancelledSOUTHERN INDIANA RADIOINgranted 2014-05-01cancelled 2014-06-10
Successor callsigns
Callsigns held now by people who previously held W9SIR.
No current licensee on record previously held this callsign.