Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5ERO callsign genealogy
Currently held by Mason II, Lowell 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 W5ERO's current licensee, walking backwards.
- Mason II, Lowell TOKgranted 2011-01-28cancelled 2011-03-29
Successor callsigns
Callsigns held now by people who previously held W5ERO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5ERO, oldest first.
- BROOKS, JAMES W TX1988-09-06 → cancelled 1997-12-02
- Mason II, Lowell T OK2021-01-21 active