Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9TMS callsign genealogy
Currently held by MART, JOHN V
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 W9TMS's current licensee, walking backwards.
- STEVENS, TREVOR MINgranted 2016-05-06cancelled 2017-09-16
Successor callsigns
Callsigns held now by people who previously held W9TMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9TMS, oldest first.
- MART, JOHN V IN1999-04-21 → cancelled 2011-04-22
- STEVENS, TREVOR M IN2017-09-16 active