Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WT3O callsign genealogy
Currently held by ADAMS SR, JAMES W
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 WT3O's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WT3O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WT3O, oldest first.
- ADAMS SR, JAMES W PA2001-11-07 → cancelled 2010-04-01
- Proy, Nicholas B MD2022-02-01 active