Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9BTM callsign genealogy
Currently held by Smith, Michael
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 W9BTM's current licensee, walking backwards.
- Smith, MichaelWIgranted 2021-09-29cancelled 2021-10-19
Successor callsigns
Callsigns held now by people who previously held W9BTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BTM, oldest first.
- SMITH, EVAN G WI2000-03-07 → cancelled 2004-07-18
- Smith, Michael WI2021-10-19 active