Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ERO callsign genealogy
Currently held by O Neill, Elizabeth R
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 W4ERO's current licensee, walking backwards.
- Olson, Emily RFLgranted 2022-12-21cancelled 2023-01-10
Successor callsigns
Callsigns held now by people who previously held W4ERO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ERO, oldest first.
- O Neill, Elizabeth R FL2003-12-12 → cancelled 2015-12-15
- Olson, Emily R FL2023-01-10 active