Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MPS callsign genealogy
Currently held by SIMON, MICHAEL P
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 W9MPS's current licensee, walking backwards.
- Sheets, Michael PINgranted 2010-06-22cancelled 2014-04-18
Successor callsigns
Callsigns held now by people who previously held W9MPS.
- SIMON, MICHAEL PILgranted 2026-06-23
All historical holders
Every license row we've seen with the callsign W9MPS, oldest first.
- SIMON, MICHAEL P MI1999-03-11 → cancelled 2004-09-04
- Sheets, Michael P IN2024-01-26 active