Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO0O callsign genealogy
Currently held by DECREASE, RUSSELL G
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 WO0O's current licensee, walking backwards.
- DECREASE, RUSSELL GMIgranted 2019-04-16cancelled 2020-11-10
Successor callsigns
Callsigns held now by people who previously held WO0O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO0O, oldest first.
- FAY JR, JOSEPH W MO2009-02-17 → cancelled 2020-10-23
- DECREASE, RUSSELL G MI2020-11-10 active