Confidence: Medium · Source: FCC ULS · As of 2026-09-10
KB9WIU callsign genealogy
Currently held by Bahr, Jonathan W
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 KB9WIU's current licensee, walking backwards.
- BAHR, JONATHAN WILgranted 1999-03-19cancelled 2000-05-31
Successor callsigns
Callsigns held now by people who previously held KB9WIU.
No current licensee on record previously held this callsign.