Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM9C callsign genealogy
Currently held by RUCK, JEREMY 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 WM9C's current licensee, walking backwards.
- COMERFORD, MATTHEW RILgranted 2019-05-15cancelled 2024-05-07
Successor callsigns
Callsigns held now by people who previously held WM9C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM9C, oldest first.
- RUCK, JEREMY D IL2018-12-27 → cancelled 2022-04-17
- COMERFORD, MATTHEW R IL2024-05-07 active