Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WI9G callsign genealogy
Currently held by OKAWARA, MAMORU
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 WI9G's current licensee, walking backwards.
- Johnsen, Michael DWIgranted 1997-02-19cancelled 2001-06-12
Successor callsigns
Callsigns held now by people who previously held WI9G.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WI9G, oldest first.
- OKAWARA, MAMORU IL1989-05-23 → cancelled 2001-05-24
- Johnsen, Michael D WI2021-03-25 active