Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SHM callsign genealogy
Currently held by THERIEN, MIKE D
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 K6SHM's current licensee, walking backwards.
- THERIEN, MIKE DCAgranted 2001-02-08cancelled 2001-05-11
Successor callsigns
Callsigns held now by people who previously held K6SHM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6SHM, oldest first.
- THERIEN, FRANCIS N CA1999-02-26 → cancelled 2000-05-17
- THERIEN, MIKE D OH2021-04-01 active