Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1JTS callsign genealogy
Currently held by SPENCER, DOUGLAS J
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 W1JTS's current licensee, walking backwards.
- SHANNON, JON TNMgranted 2005-11-02cancelled 2006-09-26
Successor callsigns
Callsigns held now by people who previously held W1JTS.
- SPENCER, DOUGLAS JMEgranted 2020-04-09
All historical holders
Every license row we've seen with the callsign W1JTS, oldest first.
- SPENCER, DOUGLAS J ME1998-12-17 → cancelled 2000-06-06
- SHANNON, JON T IN2026-07-25 active