Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9IBG callsign genealogy
Currently held by Winkler, Theodore D
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 W9IBG's current licensee, walking backwards.
- Winkler, Theodore DNJgranted 2011-12-09cancelled 2016-06-18
Successor callsigns
Callsigns held now by people who previously held W9IBG.
No current licensee on record previously held this callsign.