Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO9D callsign genealogy
Currently held by Ryskoski, Jonathan P
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 WO9D's current licensee, walking backwards.
- Ryskoski, Johnathan PWIgranted 2000-06-15cancelled 2006-04-01
Successor callsigns
Callsigns held now by people who previously held WO9D.
- SOVERN, CHARLES LFLgranted 2016-08-30