Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4EO callsign genealogy
Currently held by DONNELLY, JASON A
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 W4EO's current licensee, walking backwards.
- DONNELLY, JASON AMDgranted 2018-05-30cancelled 2018-11-24
Successor callsigns
Callsigns held now by people who previously held W4EO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4EO, oldest first.
- EVANS, CHARLES M TN2006-09-15 → cancelled 2018-11-06
- DONNELLY, JASON A MD2018-11-24 active