Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6MJS callsign genealogy
Currently held by SHIMMIN, MICHAEL J
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 W6MJS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6MJS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6MJS, oldest first.
- Cottingham, Timothy R CA2004-11-19 → cancelled 2016-11-22
- SHIMMIN, MICHAEL J UT2017-04-21 active