Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3JTO callsign genealogy
Currently held by NILES, ELMER
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 W3JTO's current licensee, walking backwards.
- Orthouse, James TPAgranted 2023-12-12cancelled 2024-01-09
Successor callsigns
Callsigns held now by people who previously held W3JTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3JTO, oldest first.
- NILES, ELMER PA1996-03-14 → cancelled 2008-03-15
- Orthouse, James T PA2024-01-09 active