Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WI9JST callsign genealogy
Currently held by Therrian, Joshua J
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 WI9JST's current licensee, walking backwards.
- Therrian, Joshua JWIgranted 2003-06-02cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held WI9JST.
No current licensee on record previously held this callsign.