Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO1X callsign genealogy
Currently held by HARWOOD, MICHAEL 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 WO1X's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WO1X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO1X, oldest first.
- SAMULENAS, THOMAS M CT2020-12-31 → cancelled 2023-02-27
- HARWOOD, MICHAEL R MA2025-03-18 active