Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0TM callsign genealogy
Currently held by Grand Mesa Contesters Of Colorado
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 W0TM's current licensee, walking backwards.
- KE0LYNcancelledGrand Mesa Contesters Of ColoradoCOgranted 2017-02-03cancelled 2018-09-11
Successor callsigns
Callsigns held now by people who previously held W0TM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0TM, oldest first.
- YANTIS, GARY L KS2016-08-09 → cancelled 2016-12-15
- Grand Mesa Contesters Of Colorado CO2018-09-11 active