Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO9F callsign genealogy
Currently held by Roskind, Michael T
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 WO9F's current licensee, walking backwards.
- Roskind, Michael TVAgranted 2022-03-14cancelled 2022-04-26
Successor callsigns
Callsigns held now by people who previously held WO9F.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO9F, oldest first.
- GRISPINO, JAMES G IL2010-01-15 → cancelled 2022-02-08
- Roskind, Michael T VA2022-04-26 active