Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7TSM callsign genealogy
Currently held by Student, Trevor M
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 W7TSM's current licensee, walking backwards.
- Student, Trevor MNVgranted 2012-06-22cancelled 2020-04-25
Successor callsigns
Callsigns held now by people who previously held W7TSM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7TSM, oldest first.
- Nicholson, Dennis E WY2003-04-09 → cancelled 2015-07-07
- Student, Trevor M OR2020-04-25 active