Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB9IWN callsign genealogy
Currently held by Sikora, John 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 WB9IWN's current licensee, walking backwards.
- SIKORA, JOHN WINgranted 1998-03-31cancelled 2002-04-26
Successor callsigns
Callsigns held now by people who previously held WB9IWN.
- Sikora, John WINgranted 2017-01-10