Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1TSM callsign genealogy
Currently held by Martin, Terrence S
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 W1TSM's current licensee, walking backwards.
- Martin, Terrence SCTgranted 2000-12-01cancelled 2009-06-02
Successor callsigns
Callsigns held now by people who previously held W1TSM.
- Martin, Terrence SCTgranted 2019-03-12