Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1JTO callsign genealogy
Currently held by Emerson, Christopher E
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 W1JTO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1JTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1JTO, oldest first.
- Emerson, Christopher E RI2002-03-07 → cancelled 2014-03-08
- O'HARA, JOHN T MA2024-01-03 active